‘The Road Ahead: Towards Seamless Payments Interoperability’, an eBook from Thunes, Visa, and The Paypers, explores how payments interoperability is reshaping the future of cross-border transactions.

The Next-Gen Technologies to Detect Fraud and Financial Crime Report 2024 highlights how banks, fintechs, and PSPs leverage AI and emerging tech to detect and combat advanced fraud.

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We explore a special class of periodic graphs, ladder graphs, whose edges can coincide when embedded vertices are moved. Many of these exhibit additional non-crystallographic graph symmetries.

The general equation of the δ direct methods is established and applied in its difference form to the definition of one of the two residuals that constitute the SMAR phasing algorithm. These two residuals use the absolute value of ρ and/or the zero conversion of negative Fourier ripples (≥50% of the unit-cell volume). Alternatively, when solved for ρ, the general equation provides a simple derivation of the already known δM tangent formula.

We enumerate the 55083357 iso-edge subdivisions of six-dimensional translational lattices. We report on the use of the method of canonical forms that allows us to apply hashing techniques used in modern databases.

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The same artificial intelligence technique typically used in facial recognition systems could help improve prediction of hailstorms and their severity, according to a new, National Science Foundation-funded study. Instead of zeroing in on the features of an individual face, scientists trained a deep learning model called a convolutional neural network to recognize features of individual storms that affect the formation of hail and how large the hailstones will be, both of which are notoriously difficult to predict. The promising results highlight the importance of taking into account a storm's entire structure, something that's been challenging to do with existing hail-forecasting techniques.

Image credit: Carlye Calvin

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After 16 years of dedicated planning and engineering, scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have completed a 3.2 gigapixel sensor array for the camera that will be used in the Large Synoptic Survey Telescope (LSST), a massive telescope that will observe the universe like never before. The digital sensor array is composed of about 200 16-megapixel sensors, divided into 21 modules called "rafts." Each raft can function on its own, but when combined, they will view an area of sky that can fit more than 40 full moons in a single image. Researchers will stitch these images together to create a time-lapse movie of the complete visible universe accessible from Chile. Currently under construction on a mountaintop in Chile, LSST is designed to capture the most complete images of our universe that have ever been achieved. The project to build the telescope facility and camera is a collaborative effort among more than 30 institutions from around the world, and it is primarily funded by DOE's Office of Science and the National Science Foundation.

Image credit: SLAC National Accelerator Laboratory

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The Maya of Central America are thought to have been a kinder, gentler civilization, especially compared to the Aztecs of Mexico. At the peak of Mayan culture some 1,500 years ago, warfare seemed ritualistic, designed to extort ransom for captive royalty or to subjugate rival dynasties, with limited impact on the surrounding population. Only later, archeologists thought, did increasing drought and climate change lead to total warfare -- cities and dynasties were wiped off the map in so-called termination events -- and the collapse of the lowland Maya civilization around 1,000 A.D. (or C.E., current era). New evidence unearthed by National Science Foundation-funded researchers call all this into question, suggesting that the Maya engaged in scorched-earth military campaigns -- a strategy that aims to destroy anything of use, including cropland -- even at the height of their civilization, a time of prosperity and artistic sophistication. The finding also indicates that this increase in warfare, possibly associated with climate change and resource scarcity, was not the cause of the disintegration of the lowland Maya civilization.

Image credit: Francisco Estrada-Belli/Tulane

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Many wild southern sea otters in California are infected with the parasite Toxoplasma gondii, yet the infection is fatal for only a fraction of sea otters, which has long puzzled the scientific community. A National Science Foundation-funded study identifies the parasite's specific strains that are killing southern sea otters, tracing them back to a bobcat and feral domestic cats from nearby watersheds. The study marks the first time a genetic link has been clearly established between the Toxoplasma strains in felid hosts and parasites causing fatal disease in marine wildlife. The study's results highlight how infectious agents like Toxoplasma can spread from cat feces on land to the sea, leading to detrimental impacts on marine wildlife.

Image credit: Trina Wood/UC Davis

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What an animal eats is a fundamental aspect of its biology, but surprisingly, the evolution of diet had not been studied across the animal kingdom until now. Scientists at the University of Arizona report several unexpected findings from taking a deep dive into the evolutionary history of more than one million animal species and going back 800 million years, when the first animals appeared on our planet. The study revealed several surprising key insights: Many species living today that are carnivorous, meaning they eat other animals, can trace this diet back to a common ancestor more than 800 million years ago; A plant-based, or herbivorous, diet is not the evolutionary driver for new species that it was believed to be; Closely related animals tend to share the same dietary category -- plant-eating, meat-eating, or both. This finding implies that switching between dietary lifestyles is not something that happens easily and often over the course of evolution.

Image credit: Daniel Stolte/UANews

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The molecular mechanism used by many bacteria to kill neighboring cells has redundancy built into its genetic makeup, which could allow for the mechanism to be expressed in different environments, say researchers at Penn State and the University of Wisconsin-Madison. Their new study provides insights into the molecular mechanisms of competition among bacteria. "Many organisms, including humans, acquire bacteria from their environment," said Tim Miyashiro, a biochemist and molecular biologist at Penn State and the leader of the research team. "These bacteria can contribute to functions within the host organism, like how our gut bacteria help us digest food. We're interested in the interactions among bacteria cells, and between bacteria and their hosts, to better understand these mutually beneficial symbiotic relationships." Cells of the bioluminescent bacteria Vibrio fisheri take up residence in the light organ of newly hatched bobtail squid. At night, the bacteria produce a blue glow that researchers believe obscures a squid's silhouette and helps protect it from predators. The light organ has pockets, or crypts, in the squid's skin that provide nutrients and a safe environment for the bacteria. "When the squid hatches, it doesn't yet have any bacteria in its light organ," said Miyashiro. "But bacteria in the environment quickly colonize the squid's light organ." Some of these different bacteria strains can coexist, but others can't. "Microbial symbioses are essentially universal in animals, and are crucial to the health and development of both partners," says Irwin Forseth, a program director in the National Science Foundation's Division of Integrative Organismal Systems, which funded the research. "The results from this study highlight the role small genetic changes can play in microbe interactions. Increased understanding will allow us to better predict organisms' performance in changing environments."

Image credit: Andrew Cecere

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A new study shows that graphene sheets can block the signals mosquitoes use to identify a blood meal, potentially enabling a new chemical-free approach to mosquito bite prevention. Researchers showed that multilayer graphene can provide a twofold defense against mosquito bites. The ultra-thin yet strong material acts as a barrier that mosquitoes are unable to bite through. At the same time, experiments showed that graphene also blocks chemical signals mosquitoes use to sense that a blood meal is near, blunting their urge to bite in the first place. The findings suggest that clothing with a graphene lining could be an effective mosquito barrier.

Image credit: Hurt Lab/Brown University

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Many people turn to the Internet to find a Mr. or Ms. Right. But lemurs just give their potential partners a sniff. A study of lemur scents has found that an individual’s distinctive body odor reflects genetic differences in their immune system, and that other lemurs can detect these differences by smell. From just one whiff, these primates can tell which prospective partners have immune genes different from their own. The ability to sniff out mates with different immune genes could make their offspring’s immune systems more diverse and able to fight more pathogens. Shown here: Fritz the ring-tailed lemur sniffs a tree for traces of other lemurs’ scents.

Image credit: David Haring/Duke Lemur Center

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Scientists have recovered the first genetic data from an extinct bird in the Caribbean, thanks to the remarkably preserved bones of a Creighton's caracara in a flooded sinkhole on Great Abaco Island in the Bahamas. Studies of ancient DNA from tropical birds have faced two formidable obstacles. Organic material quickly degrades when exposed to heat, light and oxygen. And birds' lightweight, hollow bones break easily, accelerating the decay of the DNA within. But the dark, oxygen-free depths of a 100-foot blue hole known as Sawmill Sink provided ideal preservation conditions for the bones of Caracara creightoni, a species of large carrion-eating falcon that disappeared soon after humans arrived in the Bahamas about 1,000 years ago. Florida Museum of Natural History researcher Jessica Oswald and her colleagues extracted and sequenced genetic material from the 2,500-year-old C. creightoni femur. Because ancient DNA is often fragmented or missing, the team had modest expectations for what they would find –- maybe one or two genes. But instead, the bone yielded 98.7% of the bird's mitochondrial genome, the DNA most living things inherit from their mothers. The mitochondrial genome showed that C. creightoni is closely related to the two remaining caracara species alive today: the crested caracara and the southern caracara. The three species last shared a common ancestor between 1.2 and 0.4 million years ago. "This project enhanced our understanding of the ecological and evolutionary implications of extinction, forged strong international partnerships, and trained the next generation of researchers," says Jessica Robin, a program director in National Science Foundation's Office of International Science and Engineering, which funded the study.

Image credit: Florida Museum photo by Kristen Grace

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How do galaxies such as our Milky Way come into existence? How do they grow and change over time? The science behind galaxy formation has long been a puzzle, but a University of Arizona-led team of scientists is one step closer to finding answers, thanks to supercomputer simulations. Observing real galaxies in space can only provide snapshots in time, so researchers who study how galaxies evolve over billions of years need to use computer simulations. Traditionally, astronomers have used simulations to invent theories of galaxy formation and test them, but they have had to proceed one galaxy at a time. Peter Behroozi of the university's Steward Observatory and colleagues overcame this hurdle by generating millions of different universes on a supercomputer, each according to different physical theories for how galaxies form. The findings challenge fundamental ideas about the role dark matter plays in galaxy formation, the evolution of galaxies over time and the birth of stars. The study is the first to create self-consistent universes that are exact replicas of the real ones -- computer simulations that each represent a sizeable chunk of the actual cosmos, containing 12 million galaxies and spanning the time from 400 million years after the Big Bang to the present day. The results from the "UniverseMachine," as the authors call their approach, have helped resolve the long-standing paradox of why galaxies cease to form new stars even when they retain plenty of hydrogen gas, the raw material from which stars are forged. The research is partially funded by NSF's Division of Physics through grants to UC Santa Barbara's Kavli Institute for Theoretical Physics and the Aspen Center for Physics.

Image credit: NASA/ESA/J. Lotz and the HFF Team/STScI

People rest while riding a Los Angeles Metro Rail train amid the coronavirus pandemic on April 1, 2020 in Los Angeles, California.; Credit: Mario Tama/Getty Images

Despite the racial reckoning going on in America right now, and despite the fact that attitudes towards race, inclusion and representation are different now than they were 30 years ago, new research from UC Berkeley shows that a large majority of American metro areas are more segregated now than they were in 1990. The new report from Berkeley’s Institute covers a number of topic areas, but among the key findings were from the national segregation report component of the project, which found Los Angeles to be the sixth-most segregated metro area with more than 200,000 people.

Today on AirTalk, we’ll talk with the lead researcher on the new report and a local historian to talk about how we see the findings of the report play out in Southern California.

Guests:

Stephen Menendian, assistant director and director of research at the Othering & Belonging Institute at UC Berkeley, which works to identify and eliminate the barriers to an inclusive, just, and sustainable society in order to create transformative change; he tweets @SMenendian

Eric Avila, professor of history, urban planning, and Chicano/a studies at UCLA

This content is from Southern California Public Radio. View the original story at SCPR.org.

Bill Cosby exits the Montgomery County Courthouse in Norristown, Pa., Saturday, June 17, 2017. ; Credit: Matt Rourke/AP

Pennsylvania’s highest court overturned. Bill Cosby’s sex assault conviction Wednesday after finding an agreement with a previous prosecutor prevented him from being charged in the case.

Cosby has served more than two years of a three- to 10-year sentence at a state prison near Philadelphia. He had vowed to serve all 10 years rather than acknowledge any remorse over the 2004 encounter with accuser Andrea Constand.

We dive into how this all happened, through the lens of law, celebrity and the MeToo movement. 

With files from the Associated Press

Guests: 

Ambrosio Rodriguez, former prosecutor; he is currently a criminal defense attorney at The Rodriguez Law Group in Los Angeles; he led the sex crimes team and was in the homicide unit in the Riverside D.A.’s office; he tweets at @aer_attorney

Laurie L. Levenson, professor of criminal law at Loyola Law School in Los Angeles and former federal prosecutor

This content is from Southern California Public Radio. View the original story at SCPR.org.

Tents housing the homeless at an encampment in Echo Lake Park in Los Angeles, California on March 24, 2021.; Credit: FREDERIC J. BROWN/AFP via Getty Images

The Los Angeles City Council votes Thursday on a proposal to ban sleeping or camping in certain parts of the city, including near schools, parks, libraries, and other “sensitive” facilities like daycares. It would also ban tents and encampments from blocking sidewalks if wheelchair users cannot access them. The motion is a departure from the city’s previous approach to the homelessness crisis.

Council members voted 12 to 3 on Tuesday to pull the draft ordinance out of Homelessness and Poverty Committee, where it had been stuck since November, and directed City Attorney Mike Feuer’s office to draft the new rules. Today on AirTalk, we’re speaking with Los Angeles Times reporter Ben Oreskes about the proposed rules, what Thursday’s vote means, and what we know about possible legal ramifications of the proposed changes. 

Guest: 

Ben Oreskes, staff writer at the Los Angeles Times; he tweets @boreskes

This content is from Southern California Public Radio. View the original story at SCPR.org.

The US Supreme Court is seen in Washington, DC on July 1, 2021.; Credit: MANDEL NGAN/AFP via Getty Images

The U.S. Supreme Court ends its spring term today with two final decisions expected to come down, one involving a pivotal voting rights case out of Arizona and the other involving so-called “dark money” and campaign finance. 

Today on AirTalk, we’ll get a summary of the arguments that each side in the two cases will be making, and we’ll look back on the Spring 2021 term overall, as the nine justices will break until the fall.

Guests:

Vikram Amar, dean and professor of law at the University of Illinois College of Law

David Becker, executive director and founder of the Center for Election Innovation and Research, a nonpartisan, non-profit organization that works with election officials around the country to ensure convenient and secure voting for all voters; he is the former director of the elections program at The Pew Charitable Trusts and a former senior trial attorney in the Voting Section of the Department of Justice’s Civil Rights Division; he tweets @beckerdavidj

This content is from Southern California Public Radio. View the original story at SCPR.org.

Sherman Institute, built in the Mission Revival architectural style, enrolled its first students on Sept. 9, 1902.; Credit: SHERMAN INDIAN MUSEUM

Earlier this month, Secretary of the Interior Deb Haaland announced an effort to search federal boarding schools for burial sites of Native American kids. 

The effort is similar to the one in Canada, which found the remains of up to 751 people, likely mostly children, at an unmarked grave in a defunct school in the province of Saskatchewan.  

We dive into the history of American Indian Boarding Schools, as well as their evolution and what the schools that still exist, including Sherman Institute High School in California, look like today.

Guests:

Brenda Child, professor of American Studies and American Indian Studies at the University of Minnesota; she is the author of many books, including “Boarding School Seasons: American Indian Families, 1900-1940” (University of Nebraska Press, 2000)

Amanda Wixon, curator at the Sherman Indian Museum, which is on the campus of Sherman Indian High School; assistant curator at Autry museum of the American West; PhD candidate in history at UC Riverside where her research is in Native American history, especially federal boarding schools and the carceral aspects of the Sherman Institute

This content is from Southern California Public Radio. View the original story at SCPR.org.

Facemasks remain worn as firefighter paramedic Jorge Miranda, holding syringe, speaks with Eduardo Vasquez, who has lived homeless on the streets of Los Angeles since 1992, before administering the one-shot Johnson and Johnson' Janssen Covid-19 vaccine as part of outreach to the homeless by members of the Los Angeles Fire Department's Covid Outreach unit on June 14, 2021 in Los Angeles.; Credit: FREDERIC J. BROWN/AFP via Getty Images

In our continuing series looking at the latest medical research and news on COVID-19, Larry Mantle speaks with UCSF’s Dr. Peter Chin-Hong. 

Topics today include:

• Two weeks after reopening, LA County’s new COVID-19 cases have doubled

• CDC: Infected vaccinated people carry less COVID-19 virus

• Delta variant is now detected in all 50 states

• J&J: “At present, there is no evidence to suggest need for a booster dose to be administered”

• Novavax claims vaccine’s overall efficacy is 89.7%

• Another respiratory virus is spreading in the U.S.

• Curevac’s final trial show shot is far less effective than other vaccines

• Can we now live with the coronavirus?

• Israel scrambles to curb rising COVID-19 infection rates

• Is it time to rethink “one-size-fits-all” approach for masking?

Guest:

Peter Chin-Hong, M.D., infectious disease specialist and professor of medicine at the UCSF Medical Center; he tweets @PCH_SF

This content is from Southern California Public Radio. View the original story at SCPR.org.

A homeless encampment is pictured at Venice Beach, on June 30, 2021 in Venice, California, where an initiative began this week offering people in homeless encampments a voluntary path to permanent housing.; Credit: FREDERIC J. BROWN/AFP via Getty Images

The majority of unhoused women across the nation — 57% according to recent data — say domestic violence is the direct cause of losing their permanent home. 

In L.A, almost 40% of women who are homeless say they’ve experienced abuse in the last 12 months.

The choice they’ve been forced to make: Stay in danger with their abusers — or escape, with nowhere to go.

“It’s like jumping from a burning building but there’s no net to catch you,” said Nikki Brown, a survivor and advocate.

There are many, complex reasons why survivors become homeless. Shame is one of them. Yet studies show that one in three women experience some form of intimate partner abuse in their lives. So why don’t we talk about it more?

“It's the greatest secret that's super common and nobody wants to admit it,” said Brown. “There are so many complicated circumstances that make it really hard to leave. And when you can't leave, that element of shame and blame is the thing that makes it so hard to talk about.”

Today on AirTalk, we’re learning more about reporter Julia Paskin’s series Pushed Out, on domestic violence and homelessness in Los Angeles. Do you have an experience you want to share? Give us a call at 866-893-5722.

Guests:

Julia Paskin, KPCC producer and reporter who created the “Pushed Out” series; she tweets @JuliaPaskinInc

Amy Turk, CEO of Downtown Women’s Center, which advocates and offers services for women experiencing homelessness and formerly homeless women; she tweets @AmyFTurk

Nikki Brown, staff attorney at Community Legal Aid SoCal, where she has clients that are domestic violence survivors

This content is from Southern California Public Radio. View the original story at SCPR.org.

Detail of boxes with the U.S. donated Johnson & Johnson vaccine against Covid-19 at Universidad de Baja California on June 17, 2021 in Tijuana, Baja California. ; Credit: Francisco Vega/Getty Images

In our continuing series looking at the latest medical research and news on COVID-19, Larry Mantle speaks with Dr. Annabelle De St. Maurice from University of California Los Angeles/Mattel Children’s hospital.

Topics today include:

• J&J says its vaccine is effective against Delta variant

  • J&J vaccine lasts at least 8 months

• WHO says all vaccines it authorized should be recognized by reopening countries

• White House says it will miss July 4 vaccination goal

• Postpartum depression on the rise during the pandemic

• Experts believe Novavax may play a role in combating vaccine hesitancy

• Delta variant is not driving a surge in hospitalization rates in England

Guest: 

Annabelle De St. Maurice, M.D., assistant professor of pediatrics in the division of infectious diseases and the co-chief infection prevention officer at University of California Los Angeles/Mattel Children’s hospital; she tweets @destmauricemd

This content is from Southern California Public Radio. View the original story at SCPR.org.

California Gov. Gavin Newsom looks on during a news conference after he toured the newly reopened Ruby Bridges Elementary School on March 16, 2021 in Alameda, California. ; Credit: Justin Sullivan/Getty Images

California on Thursday scheduled a Sept. 14 recall election that could drive Democratic Gov. Gavin Newsom from office, the result of a political uprising largely driven by angst over state coronavirus orders that shuttered schools and businesses and upended life for millions of Californians.

The election in the nation’s most populous state will be a marquee contest with national implications, watched closely as a barometer of the public mood heading toward the 2022 elections, when a closely divided Congress again will be in play.

We’ll get the latest. 

With files from the Associated Press 

Guests: 

Katie Orr, government and politics reporter for KQED; she tweets @1KatieOrr

Lara Korte, California politics reporter at the Sacramento Bee; she tweets @lara_korte

This content is from Southern California Public Radio. View the original story at SCPR.org.

Athletes compete during the cycling portion of the IRONMAN 70.3 Steelhead on June 27, 2021 in Benton Harbor, Michigan. ; Credit: Patrick McDermott/Getty Images for IRONMAN

Whether you’re new to running or you’ve finished your tenth triathlon, we want to hear from you about what motivates you and how that translates into pushing yourself physically. 

Guests: 

Mark Remy, longtime runner and writer in Portland, Oregon; creator of humor website dumbrunner.com; he is the author of many books, including The Runner's Rule Book: Everything a Runner Needs to Know--And Then Some (Runner's World) (Rodale Books, 2009)

Sharon McNary, infrastructure correspondent at KPCC; she finished her 11th Ironman Race last week at Coeur d’Alene; she tweets @KPCCsharon

This content is from Southern California Public Radio. View the original story at SCPR.org.

Copy of the book “Beyond Baseball’s Color Barrier: The Story of African Americans in Major League Baseball, Past, Present, and Future” (Rowman & Littlefield, May 2021)

Most of us are familiar with the story of Jackie Robinson, the first Black player to play baseball in the Major Leagues, and while Jackie’s story is arguably the biggest chapter in the story of how baseball was integrated, there’s plenty more to the story that happened both before and after Jackie broke into the Majors. Author, sports historian and Santa Barbara City College Director of Athletics Rocco Constantino dives into this rich history in his new book “Beyond Baseball’s Color Barrier: The Story of African Americans in Major League Baseball, Past, Present, and Future” where he explores the contributions of major figures like Hank Aaron, Willie Mays and Satchel Paige as well as the lesser known ones of players like Vida Blue, Mudcat Grant and Dwight Gooden.

Today on AirTalk, Constantino joins Larry Mantle to explore the history of Black players in baseball, their fight for recognition and integration into the Major Leagues and the issues of race that persisted well beyond Jackie Robinson breaking baseball’s color barrier.

Guest:

Rocco Constantino, author of “Beyond Baseball’s Color Barrier: The Story of African Americans in Major League Baseball, Past, Present, and Future” (Rowman & Littlefield, May 2021); he is a sports historian and the director of athletics at Santa Barbara City College

This content is from Southern California Public Radio. View the original story at SCPR.org.

A passenger wearing a protective face covering to combat the spread of the coronavirus, checks her phone while travelling on a bus along Oxford Street in central London on July 5, 2021.; Credit: DANIEL LEAL-OLIVAS/AFP via Getty Images

In our continuing series looking at the latest medical research and news on COVID-19, Larry Mantle speaks with Professor Kristen Choi of UCLA. 

Topics today include:

• Biden to announce new efforts on vaccination campaign as Delta variant spreads

• Hospitalization rates getting worse for black residents of L.A. County 

• Which parts of the U.S. could be breeding grounds for variants?

• New Israeli data about effectiveness of Pfizer against Delta variant

• England to lift mask restrictions

• Cases on rise in immigration detention centers in the U.S. 

• Bay area zoo is vaccinating big cats and some other animals 

Guest:

Kristen R. Choi, professor of nursing and public health at UCLA; registered nurse practicing at Gateways Hospital, based in Echo Park

This content is from Southern California Public Radio. View the original story at SCPR.org.

In this photo taken on February 10, 2020 a 'love kit' is seen on the bed in a room at the Dragonfly hotel in Mumbai.; Credit: PUNIT PARANJPE/AFP via Getty Images

A new survey shows that in the era of widespread vaccine availability, American couples are more satisfied in their relationships -- and some are even getting more experimental than they have been.

Led by Indiana University Kinsey Institute researcher Justin Lehmiller in collaboration with the website Lovehoney, which describes itself as “global sexual happiness experts,” the report looked at responses from 2,000 U.S. adults age 18-45, including an oversample of 200 who identified as LGBTQ, and among the major findings of the survey were that more than half (51 percent) of respondents said their sexual interests had changed during the pandemic, and many of those said they’d started trying things they hadn’t before. It also found that 44 percent of people surveyed said they were communicating better with their partner, and among singles surveyed 52 percent say they’re less interested in casual sex and more than a third of them said they weren’t interested in having sex on the first date.

Today on AirTalk, we’ll talk with Professor Lehmiller about the survey, its findings and how the pandemic impacted Americans’ views on relationships and sex.

Guest: 

Justin Lehmiller, social psychologist and research fellow at Indiana University’s Kinsey Institute who conducted the “Summer of Love” survey; author of “Tell Me What You Want: The Science of Sexual Desire and How It Can Help You Improve Your Sex Life” (Hachette Go, July 2020); host of the “Sex and Psychology” podcast; he tweets @JustinLehmiller

This content is from Southern California Public Radio. View the original story at SCPR.org.

Don't fear the 'shrooms.; Credit: /iStockphoto.com

California on Tuesday moved another step closer to decriminalizing psychedelics — amid a debate over whether their prohibition is an outdated remnant of the War on Drugs — after the author removed a substance (ketamine) from the bill that opponents said can be used as a date-rape drug.

The bill would allow those 21 and older to possess for personal use and “social sharing” psilocybin, the hallucinogenic component of so-called magic mushrooms. It also covers psilocybin, dimethyltryptamine (DMT), ibogaine, mescaline excluding peyote, lysergic acid diethylamide (LSD) and 3,4-methylenedioxymethamphetamine (MDMA, often called ecstasy).

The bill bars sharing with those under age 21 or possessing the substances on school grounds. It would remove the state’s ban on cultivating or transferring mushroom spores or other material containing psilocybin or psilocybin.

Even if California makes the bill law, the drugs would still be illegal under federal law.

With files from the Associated Press.

Guests:

Scott Wiener, author of SB 519; California State Senator representing Senate District 11, which includes all of the city and county of San Francisco, Broadmoor, Colma, Daly City, and part of South San Francisco; he tweets @Scott_Wiener

John Lovell, legislative director of the California Narcotics Officers Association

This content is from Southern California Public Radio. View the original story at SCPR.org.

A fireworks stand, one of about 25 booths that are open for business, advertises on the first day of fireworks sales for Fourth of July celebrations June 28, 2005 in Fillmore, California.; Credit: David McNew/Getty Images

Every year in the days leading up to Independence Day, we’re flooded with public service announcements warning of the dangers and risks associated with fireworks. In LA County, where most fireworks are illegal, it can be even more dangerous as the area’s risk of fire grows. 

Today on AirTalk, we discuss the challenges in enforcing and responding to the use of illegal fireworks and the growing risks. We also want to hear from listeners. What was your Fourth of July experience like this year with fireworks? Do you think more needs to be done to crack down? Join the conversation by calling 866-893-5722.

We reached out to the Los Angeles Police Department, but the department was not able to accommodate our interview request and says updated data is unavailable at this time.

Guest:

Mike Feuer, Los Angeles city attorney; he tweets @Mike_Feuer

This content is from Southern California Public Radio. View the original story at SCPR.org.

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Needle pricks not your thing? A team of National Science Foundation-funded scientists is developing wearable skin sensors that can detect what's in your sweat. They hope that one day, monitoring perspiration could bypass the need for more invasive procedures like blood draws, and provide real-time updates on health problems such as dehydration or fatigue. In a new paper, the team describes a new sensor design that can be rapidly manufactured using a "roll-to-roll" processing technique that essentially prints the sensors onto a sheet of plastic like words on a newspaper. They used the sensors to monitor the sweat rate, and the electrolytes and metabolites in sweat, from volunteers who were exercising, and others who were experiencing chemically induced perspiration. The new sensors contain a spiraling microscopic tube, or microfluidic, that wicks sweat from the skin. By tracking how fast the sweat moves through the microfluidic, the sensors can report how much a person is sweating, or their sweat rate. The microfluidics are also outfitted with chemical sensors that can detect concentrations of electrolytes like potassium and sodium, and metabolites like glucose.

Image credit: Bizen Maskey/Sunchon National University

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Earth's magnetic field seems steady and true -- reliable enough to navigate by. Yet, largely hidden from daily life, the field drifts, waxes and wanes. The magnetic North Pole is currently shifting toward Siberia, forcing the Global Positioning System that underlies modern navigation to update its software sooner than expected. Every several hundred thousand years, the magnetic field dramatically shifts and reverses its polarity. Magnetic north flips to the geographic South Pole and, eventually, back again. This reversal has happened countless times over Earth's history, but scientists' understanding of why and how the field reverses is limited. The researchers find that the most recent field reversal 770,000 years ago took at least 22,000 years to complete, several times longer than previously thought. The results call into question controversial findings that some reversals could occur within a human lifetime.

Image credit: Brad Singer

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National Science Foundation-funded engineers have developed a mathematical framework that can turn any sheet of material into any prescribed shape, inspired by the paper craft kirigami (from the Japanese, kiri, meaning to cut and kami, meaning paper). Unlike its better-known cousin origami, which uses folds to shape paper, kirigami relies on a pattern of cuts in a flat paper sheet to change its flexibility and allow it to morph into 3D shapes. Artists have long used this artform to create everything from pop-up cards to castles and dragons. This research follows previous work by the researchers that characterized how origami-based patterns could be used as building blocks to create almost any three-dimensional curved shape. Next the researchers aim to explore how to combine cuts and folds to achieve any shape with a given set of properties, thus linking origami and kirigami.

Image credit: Harvard SEAS

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A National Science Foundation-funded research has discovered the root cause of why lithium metal batteries fail -- bits of lithium metal deposits break off from the surface of the anode during discharging and are trapped as "dead" or inactive lithium that the battery can no longer access. The discovery challenges the conventional belief that lithium metal batteries fail because of the growth of a layer, called the solid electrolyte interphase (SEI), between the lithium anode and the electrolyte. The researchers made their discovery by developing a technique to measure the amounts of inactive lithium species on the anode -- a first in the field of battery research -- and studying their micro- and nanostructures. The findings could pave the way for bringing rechargeable lithium metal batteries from the lab to the market.

Image credit: University of California - San Diego

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A National Science Foundation-funded study found that Charles Darwin's famous finches defy what has long been considered a key to evolutionary success: genetic diversity. The research on finches of the Galapagos Islands could change the way conservation biologists think about a species' potential for extinction in naturally fragmented populations. Researchers examined 212 tissue samples from museum specimens and living birds. Some of the museum specimens in the study were collected by Darwin himself in 1835. Only one of the extinct populations, a species called the vegetarian finch, had lower genetic diversity compared to modern survivors. Specifically, researchers believe a biological phenomenon called sink-source dynamics is at play in which larger populations of birds from other islands act as a "source" of immigrants to the island population that is naturally shrinking, the "sink." Without these immigrant individuals, the natural population on the island likely would continue to dwindle to local extinction. The immigrants have diverse genetics because they are coming from a variety of healthier islands, giving this struggling "sink" population inflated genetic diversity.

Image credit: Jose Barreiro

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Machine learning algorithms can sometimes do a great job with a little help from human expertise, at least in the field of materials science. In many specialized areas of science, engineering and medicine, researchers are turning to machine learning algorithms to analyze data sets that have grown too large for humans to understand. In materials science, success with this effort could accelerate the design of next-generation advanced functional materials, where development now usually depends on old-fashioned trial and error. By themselves, however, data analytics techniques borrowed from other research areas often fail to provide the insights needed to help materials scientists and engineers choose which of many variables to adjust -- and the techniques can't account for dramatic changes such as the introduction of a new chemical compound into the process. In a new study, researchers explain a technique known as dimensional stacking, which shows that human experience still has a role to play in the age of machine intelligence. The machines gain an edge at solving a challenge when the data to be analyzed are intelligently organized based on human knowledge of what factors are likely to be important and related. "When your machine accepts strings of data, it really does matter how you are putting those strings together," said Nazanin Bassiri-Gharb, the paper's corresponding author and a scientist at the Georgia Institute of Technology. "We must be mindful that the organization of data before it goes to the algorithm makes a difference. If you don't plug the information in correctly, you will get a result that isn't necessarily correlated with the reality of the physics and chemistry that govern the materials."

Image credit: Rob Felt/Georgia Tech

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A new study shows that the West Antarctic Peninsula is experiencing some of the most rapid climate change on Earth, featuring dramatic increases in temperatures, retreats in glaciers and declines in sea ice. The Southern Ocean absorbs nearly half of the carbon dioxide -- the key greenhouse gas linked to climate change -- that is absorbed by all the world's oceans. The study tapped an unprecedented 25 years of oceanographic measurements in the Southern Ocean and highlights the need for more monitoring in the region. The research revealed that carbon dioxide absorption by surface waters off the West Antarctic Peninsula is linked to the stability of the upper ocean, along with the amount and type of algae present. A stable upper ocean provides algae with ideal growing conditions. During photosynthesis, algae remove carbon dioxide from the surface ocean, which in turn draws carbon dioxide out of the atmosphere. From 1993 to 2017, changes in sea ice dynamics off the West Antarctic Peninsula stabilized the upper ocean, resulting in greater algal concentrations and a shift in the mix of algal species. That's led to a nearly five-fold increase in carbon dioxide absorption during the summertime. The research also found a strong north-south difference in the trend of carbon dioxide absorption. The southern portion of the peninsula, which to date has been less impacted by climate change, experienced the most dramatic increase in carbon dioxide absorption, demonstrating the poleward progression of climate change in the region.

Image credit: Drew Spacht/The Ohio State University

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On August 17, 2017, scientists made history with the first direct observation of a merger between two neutron stars. It was the first cosmic event detected in both gravitational waves and the entire spectrum of light, from gamma rays to radio emissions. The impact also created a kilonova -- a turbocharged explosion that instantly forged several hundred planets’ worth of gold and platinum. The observations provided the first compelling evidence that kilonovae produce large quantities of heavy metals, a finding long predicted by theory. Astronomers suspect that all of the gold and platinum on Earth formed as a result of ancient kilonovae created during neutron star collisions. Based on data from the 2017 event, first spotted by the Laser Interferometer Gravitational-wave Observatory (LIGO), astronomers began to adjust their assumptions of how a kilonova should appear to Earth-bound observers. A team of scientists reexamined data from a gamma-ray burst spotted in August 2016 and found new evidence for a kilonova that went unnoticed during the initial observations.

Image credit: NASA/ESA/E. Troja

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National Science Foundation (NSF)-funded researchers from North Carolina State and Elon universities have developed a technique that allows them to remotely control the movement of soft robots, lock them into position for as long as needed and later reconfigure the robots into new shapes. The technique relies on light and magnetic fields. "By engineering the properties of the material, we can control the soft robot's movement remotely; we can get it to hold a given shape; we can then return the robot to its original shape or further modify its movement; and we can do this repeatedly. All of those things are valuable, in terms of this technology's utility in biomedical or aerospace applications," says Joe Tracy, a professor of materials science and engineering at NC State and corresponding author of a paper on the work. In experimental testing, the researchers demonstrated that the soft robots could be used to form "grabbers" for lifting and transporting objects. The soft robots could also be used as cantilevers or folded into "flowers" with petals that bend in different directions. "We are not limited to binary configurations, such as a grabber being either open or closed," says Jessica Liu, first author of the paper and a Ph.D. student at NC State. "We can control the light to ensure that a robot will hold its shape at any point."

Image credit: Jessica A.C. Liu

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Bridges make travel faster and more convenient, but, in an earthquake, these structures are subject to forces that can cause extensive damage and make them unsafe. Now civil and environmental engineer Petros Sideris of Texas A&M University is leading a National Science Foundation (NSF)-funded research project to investigate the performance of hybrid sliding-rocking (HSR) columns. HSR columns provide the same support as conventional bridge infrastructure columns but are more earthquake-resistant. HSR columns are a series of individual concrete segments held together by steel cables that allow for controlled sliding and rocking. This allows the columns to shift without damage, while post-tensioning strands ensure that at the end of an earthquake the columns are pushed back to their original position. Conventional bridges are cast-in-place monolithic concrete elements that are strong but inflexible. Structural damage in these bridge columns, typically caused by a natural disaster, often forces a bridge to close until repairs are completed. But bridges with HSR columns can withstand large earthquakes with minimal damage and require minor repairs, likely without bridge closures. Such infrastructure helps with post-disaster response and recovery and can save thousands in taxpayer dollars. In an earthquake, HSR columns provide "multiple advantages to the public," Sideris said. "By preventing bridge damage, we can maintain access to affected areas immediately after an event for response teams to be easily deployed, and help affected communities recover faster. In mitigating losses related to post-event bridge repairs and bridge closures, more funds can be potentially directed to supporting the recovery of the affected communities." According to Joy Pauschke, NSF program director for natural hazards engineering, "NSF invests in fundamental engineering research so that, in the future, the nation's infrastructure can be more resilient to earthquakes, hurricanes, and other forces of nature."

Image credit: Texas A&M University

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