Health Ministry to send central teams to 10 States.

A select list of stories to read before you start your day

A video on India's massive repatriation operation to bring back stranded Indians from different parts of the world in the wake of the coronavirus crisis

‘But people will be allowed to return only after a few more days’

The transmission of the optical components of the Bernina branch of the Aramis beamline at SwissFEL has been measured with an X-ray gas monitor from DESY and compared with a PSI gas detector upstream of the optical components. The transmission efficiencies of the Mo, Si and SiC mirror coatings of the Aramis beamline and the various other in-beam components were evaluated and compared with theoretical calculations, showing an agreement of 6% or better in all cases. The experiment has also shown the efficacy of the high-harmonic rejection mirrors at the Bernina branch of the Aramis beamline at SwissFEL, and characterized the transmission efficiency of the on-line spectrometer in the Aramis beamline. The theoretical transmission of the mirror coatings match the experimental data to within 7%. The accuracy of these measurements was checked against a radiative bolometer from a Japanese collaboration and found to agree to a level of 4% or better. Further comparisons with a diamond detector from a US-based inter-institute collaboration demonstrated a good agreement for the attenuator settings of the beamline.

In transmission X-ray microscopy (TXM) systems, the rotation of a scanned sample might be restricted to a limited angular range to avoid collision with other system parts or high attenuation at certain tilting angles. Image reconstruction from such limited angle data suffers from artifacts because of missing data. In this work, deep learning is applied to limited angle reconstruction in TXMs for the first time. With the challenge to obtain sufficient real data for training, training a deep neural network from synthetic data is investigated. In particular, U-Net, the state-of-the-art neural network in biomedical imaging, is trained from synthetic ellipsoid data and multi-category data to reduce artifacts in filtered back-projection (FBP) reconstruction images. The proposed method is evaluated on synthetic data and real scanned chlorella data in 100° limited angle tomography. For synthetic test data, U-Net significantly reduces the root-mean-square error (RMSE) from 2.55 × 10−3 µm−1 in the FBP reconstruction to 1.21 × 10−3 µm−1 in the U-Net reconstruction and also improves the structural similarity (SSIM) index from 0.625 to 0.920. With penalized weighted least-square denoising of measured projections, the RMSE and SSIM are further improved to 1.16 × 10−3 µm−1 and 0.932, respectively. For real test data, the proposed method remarkably improves the 3D visualization of the subcellular structures in the chlorella cell, which indicates its important value for nanoscale imaging in biology, nanoscience and materials science.

Leading scientists set out resource challenge of meeting net zero emissions in the UK by 2050  The Natural History Museum

The design and first results of a large-solid-angle X-ray emission spectrometer that is optimized for energies between 1.5 keV and 5.5 keV are presented. The spectrometer is based on an array of 11 cylindrically bent Johansson crystal analyzers arranged in a non-dispersive Rowland circle geometry. The smallest achievable energy bandwidth is smaller than the core hole lifetime broadening of the absorption edges in this energy range. Energy scanning is achieved using an innovative design, maintaining the Rowland circle conditions for all crystals with only four motor motions. The entire spectrometer is encased in a high-vacuum chamber that allocates a liquid helium cryostat and provides sufficient space for in situ cells and operando catalysis reactors.

A versatile, compact heater designed at National Synchrotron Light Source-II for in situ X-ray nano-imaging in a full-field transmission X-ray microscope is presented. Heater design for nano-imaging is challenging, combining tight spatial constraints with stringent design requirements for the temperature range and stability. Finite-element modeling and analytical calculations were used to determine the heater design parameters. Performance tests demonstrated reliable and stable performance, including maintaining the exterior casing close to room temperature while the heater is operating at above 1100°C, a homogenous heating zone and small temperature fluctuations. Two scientific experiments are presented to demonstrate the heater capabilities: (i) in situ 3D nano-tomography including a study of metal dealloying in a liquid molten salt extreme environment, and (ii) a study of pore formation in icosahedral quasicrystals. The progression of structural changes in both studies were clearly resolved in 3D, showing that the new heater enables powerful capabilities to directly visualize and quantify 3D morphological evolution of materials under real conditions by X-ray nano-imaging at elevated temperature during synthesis, fabrication and operation processes. This heater design concept can be applied to other applications where a precise, compact heater design is required.

Whole-mount (WM) platelet preparation followed by transmission electron microscopy (TEM) observation is the standard method currently used to assess dense granule (DG) deficiency (DGD). However, due to the electron-density-based contrast mechanism in TEM, other granules such as α-granules might cause false DG detection. Here, scanning transmission X-ray microscopy (STXM) was used to identify DGs and minimize false DG detection of human platelets. STXM image stacks of human platelets were collected at the calcium (Ca) L2,3 absorption edge and then converted to optical density maps. Ca distribution maps, obtained by subtracting the optical density maps at the pre-edge region from those at the post-edge region, were used to identify DGs based on the Ca richness. DGs were successfully detected using this STXM method without false detection, based on Ca maps for four human platelets. Spectral analysis of granules in human platelets confirmed that DGs contain a richer Ca content than other granules. The Ca distribution maps facilitated more effective DG identification than TEM which might falsely detect DGs. Correct identification of DGs would be important to assess the status of platelets and DG-related diseases. Therefore, this STXM method is proposed as a promising approach for better DG identification and diagnosis, as a complementary tool to the current WM TEM approach.

Enhancement of X-ray excited optical luminescence in a 100 µm-thick diamond plate by introduction of defect states via electron beam irradiation and subsequent high-temperature annealing is demonstrated. The resulting X-ray transmission-mode scintillator features a linear response to incident photon flux in the range 7.6 × 108 to 1.26 × 1012 photons s−1 mm−2 for hard X-rays (15.9 keV) using exposure times from 0.01 to 5 s. These characteristics enable a real-time transmission-mode imaging of X-ray photon flux density without disruption of X-ray instrument operation.

The composition of occupied and unoccupied electronic states in the vicinity of Fermi energies is vital for all materials and relates to their physical, chemical and mechanical properties. This work demonstrates how the combination of resonant and non-resonant X-ray emission spectroscopies supplemented with theoretical modelling allows for quantitative analysis of electronic states in 5d transition metal and metal-oxide materials. Application of X-rays provides element selectivity that, in combination with the penetrating properties of hard X-rays, allows determination of the composition of electronic states under working conditions, i.e. non-vacuum environment. Tungsten metal and tungsten oxide are evaluated to show the capability to simultaneously assess composition of around-band-gap electronic states as well as the character and magnitude of the crystal field splitting.

A historical tool for crystallographic analysis is provided by the Hilton net, which can be used for manually surveying the crystal lattice as it is manifested by the Kikuchi bands in a gnomonic projection. For a quantitative analysis using the Hilton net, the projection centre as the relative position of the signal source with respect to the detector plane needs to be known. Interplanar angles are accessible with a precision and accuracy which is estimated to be ≤0.3°. Angles between any directions, e.g. zone axes, are directly readable. Finally, for the rare case of an unknown projection-centre position, its determination is demonstrated by adapting an old approach developed for photogrammetric applications. It requires the indexing of four zone axes [uvw]i in a backscattered Kikuchi diffraction pattern of a known phase collected under comparable geometric conditions.

BEATRIX, is a new tool for performing data analysis of energy-resolved neutron-imaging experiments involving intense fitting procedures of multi-channel spectra. The use of BEATRIX is illustrated for a test specimen, providing spatially resolved 2D maps for residual strains and Bragg edge heights.

When NASA’s Solar Probe Plus launches before the end of the decade, it will carry a suite of cutting-edge scientific instruments. Only one–the Solar Wind Electrons Alphas and Protons Investigation (SWEAP)–will directly sample the Sun’s outer atmosphere.

The post Center for Astrophysics will play major role in mission to “touch” the Sun appeared first on Smithsonian Insider.

At 7:05 pm (EDT), Thursday, Sept. 8, NASA plans to launch a spacecraft to a near-Earth asteroid named Bennu. Among that spacecraft’s five instruments is […]

The post Asteroid Mission carries Student X-ray Experiment appeared first on Smithsonian Insider.

NASA’s Kepler mission is responsible for history’s first detection of Earth-sized planets orbiting other suns in their temperate “habitable zones.” The team in charge of […]

The post NASA’s Kepler mission receives National Air and Space Museum’s highest group honor appeared first on Smithsonian Insider.

Supporters of the late educator and civil rights advocate Sal Castro are working to keep his Chicano Youth Leadership Conference alive.; Credit: Crystal Marie Lopez/Flickr

When he died in 2013, Sal Castro drew praise as a Southern California civil rights leader who championed educational opportunities for generations of students of Mexican descent.

While a high school teacher in 1968, he helped thousands of students stage massive walkouts in Los Angeles' east side to protest high dropout rates and poor schooling that ignored their cultural background.

Supporters say his most influential legacy is the Chicano Youth Leadership Conference that he founded in 1963 as a weekend camp in the Santa Monica mountains. The gathering functioned as a cultural pep rally and intensive college application session.

“There was quite a large group of people that knew that this is not something that could die with him. That is when we had the idea to form a foundation to make sure that we keep his legacy alive,” said Myrna Brutti, the conference’s director.

Castro struggled to raise money for the conference, which counts among its alumni such well-known leaders as former Los Angeles Mayor Antonio Villaraigosa and filmmaker Moctesuma Esparza.

The Sal Castro Foundation typically spends about $60,000 to pay for the camp, including food and bus transportation. The group raises the money so that students can attend for free.

Applications to the next conference on March 6 have been sent to LAUSD high school campuses, targeting low-income Latinos, with a Feb. 20 deadline. Organizers hope in years ahead to open the conference to other Southland schools.

Brutti, a middle school principal, said she sees many more college application and high school to college bridge programs today. But a large group of high school students still go without college counseling, she said.

“These are 4.0, 3.7, 3.9, 4.2 [grade-point average] students that graduate from high school and go directly into the workforce because no one has taken the time to really go in depth on…what is available to them,” Brutti said.

The conference gives students like high school junior Savannah Pierce a broader view of their post-graduation choices. She attended the conference in October.

“I never really gave much thought to getting a doctorate degree,” Pierce said. “I thought I was going to do my four years of undergraduate and maybe graduate school. I never realized how many options and opportunities there were.”

When Castro talked to students of Mexican descent, he often transitioned seamlessly between English and Spanish, giving brief lessons on Mexican history and notable Mexicans. The current conference leaders are keeping that tradition alive.

“I never realized how deep and important my culture is and how rich it is with knowledge, and how hard people have worked in the past to get me where I am today,” Pierce said.

Other resources for students seeking help with college applications include:

1. California college and career planning

2. The College Board’s college planning helper

3. The Princeton Review’s college helper

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

Incineration is widely used in the United States to reduce the volume of waste. Hundreds of incinerators -- including industrial kilns, boilers, and furnaces -- combust municipal and hazardous waste, while many more are used to burn medical waste.

By expending too many resources to inspect cleaner low-emitting vehicles, coupled with a lack of effective ways to deal with the dirtiest ones, states are missing opportunities to reduce air pollution.

Current federal tax provisions have minimal net effect on greenhouse gas emissions, according to a new report from the National Research Council.

There is no substitute for dramatic reductions in greenhouse gas emissions to mitigate the negative consequences of climate change, a National Research Council committee concluded in a two-volume evaluation of proposed climate-intervention techniques.

To make the world safer against future infectious disease threats, national health systems should be strengthened, the World Health Organization’s emergency and outbreak response activities should be consolidated and bolstered, and research and development should be enhanced, says a new Policy Forum article that appears in the May 19 edition of PLOS Medicine.

A new report from the National Academies of Sciences, Engineering, and Medicine that examines the regulations governing federally funded research recommends that Congress authorize and the president appoint an independent national commission to examine and update the ethical, legal, and institutional frameworks governing research involving human subjects.

Efforts to control brucellosis in the Greater Yellowstone Area (GYA) should focus on reducing the risk of transmission from elk, which are now viewed as the primary source of the infection in new cases occurring in cattle and domestic bison, says a new report by the National Academies of Sciences, Engineering, and Medicine.

The Advanced Research Projects Agency-Energy (ARPA-E) is making progress toward achieving its statutory mission and goals, says a new congressionally mandated report by the National Academies of Sciences, Engineering, and Medicine.

NASA’s large strategic missions like the Hubble Space Telescope, the Curiosity rover on Mars, and the Terra Earth observation satellite are essential to maintaining the United States’ global leadership in space exploration and should continue to be a primary component of a balanced space science program that includes large, medium, and smaller missions, says a new report by the National Academies of Sciences, Engineering, and Medicine.

The U.S. should take bold steps to improve measurement, monitoring, and inventories of methane emissions caused by human activities, says a new report from the National Academies of Sciences, Engineering, and Medicine.

The current process for planetary protection policy development is inadequate to respond to increasingly complex solar system exploration missions, says a new report from the National Academies of Sciences, Engineering, and Medicine.

To answer significant questions about planetary systems, such as whether our solar system is a rare phenomenon or if life exists on planets other than Earth, NASA should lead a large direct imaging mission – an advanced space telescope – capable of studying Earth-like exoplanets orbiting stars similar to the sun, says a new congressionally mandated report by the National Academies of Sciences, Engineering, and Medicine.

To advance the search for life in the universe, NASA should support research on a broader range of biosignatures and environments, and incorporate the field of astrobiology into all stages of future exploratory missions, says a new congressionally mandated report from the National Academies of Sciences, Engineering, and Medicine.

A new report from the National Academies of Sciences, Engineering, and Medicine outlines a research agenda for improving the commercial viability of technologies that turn greenhouse gases from the burning of fossil fuels into useful products such as fuels, construction materials, and chemicals.

An international commission has been convened by the U.S. National Academy of Medicine, the U.S. National Academy of Sciences, and the Royal Society of the U.K., with the participation of science and medical academies around the world, to develop a framework for scientists, clinicians, and regulatory authorities to consider when assessing potential clinical applications of human germline genome editing.

Last week, the International Commission on the Clinical Use of Human Germline Genome Editing held its first public meeting at the National Academy of Sciences building in Washington, D.C.

The International Commission on the Clinical Use of Human Germline Genome Editing is tasked with identifying the scientific, medical, and ethical requirements to consider when assessing potential clinical applications of human germline genome editing — if society concludes that heritable human genome editing applications are acceptable.

Traffic on the Hollywood Freeway in Los Angeles in 2018. The Trump administration is weakening auto pollution standards, rolling back a key Obama-era policy that sought to curb climate change.; Credit: Damian Dovarganes/AP

The Trump administration has finalized its rollback of a major Obama-era climate policy, weakening auto emissions standards in a move it says will mean cheaper cars for consumers.

"By making newer, safer, and cleaner vehicles more accessible for American families, more lives will be saved and more jobs will be created," U.S. Secretary of Transportation Elaine L. Chao said in a statement.

But consumer watchdog organizations, environmental groups and even the Environmental Protection Agency's own scientific advisory board have raised concerns about that rationale, saying the weakened standards will lead to dirtier air and cost consumers at the gas pump long-term.

Environmental Protection Agency administrator Andrew Wheeler called the new rule a move to "correct" greenhouse gas emissions standards that were costly for automakers to comply with.

"Our final rule...strikes the right regulatory balance that protects our environment, and sets reasonable targets for the auto industry," Wheeler said in a statement.

The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule will toughen carbon dioxide emissions standards by 1.5% a year through model year 2026, compared to about 5% a year under the Obama policy.

The Trump administration originally proposed freezing the standards altogether without any increase. It modified the rule after push back from not only environmental groups but also some automakers, who worried they will be out of step in a global marketplace increasingly geared toward lower emission cars and trucks.

Still, critics say the new rule will lead to nearly a billion additional metric tons of climate warming CO2 in the atmosphere, and that consumers will end up losing money by buying about 80 billion more gallons of gas.

"This rule will lead to dirtier air at a time when our country is working around the clock to respond to a respiratory pandemic whose effects may be exacerbated by air pollution," said U.S. Senator Tom Carper (D-Del.) in a statement. He's the top Democrat on the Senate Environment and Public Works Committee.

The Trump administration asserts the new rule will save lives because Americans will buy newer, safer vehicles. But Carper points out that its own analysis finds there would be even more premature deaths from increased air pollution.

For that reason and others, the new standards are sure to face legal challenges. In fact, even the Trump administration's own science advisers have said "there are significant weaknesses in the scientific analysis of the proposed rule."

"The rollback of the vehicle emissions standards is based on analysis that is shoddy even by the shockingly unprofessional standards of Trump-era deregulation," said Richard Revesz of the Institute for Policy Integrity and Dean Emeritus at New York University School of Law.

California and other states are also likely to file suit against the rule. They've asserted their long-standing right to set their own, stricter emissions standards, something the Trump administration has also challenged.

A worst case scenario for automakers would be different standards in different states. The new policy may ultimately be decided by the U.S. Supreme Court, but the uncertainty waiting for that would exact its own toll on an industry that must plan years ahead.

Thomas Pyle, President of the American Energy Alliance, welcomed the new standards. In a statement, he said the Obama-era mandate was "impossible to achieve without dramatically altering the automobile market or making the cost of vehicles out of reach for most American families. This new... rule will make cars more affordable for consumers at a time when they need it most."

The Trump administration has been pushing ahead with a number of environmental rollbacks, aiming to finalize them well ahead of November's election. That would make it harder for a Democratic president, if one were elected, to reverse them again.

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

Several countries around the world are emitting less carbon due to the pandemic slowdown, but the climate will continue to warm.; Credit: Andy Buchanan/AFP via Getty Images

With the dramatic reduction in car traffic and commercial flights, carbon emissions have been falling around the globe. If the slowdown continues, some are estimating the world could see the largest drop in emissions in the last century.

Still, overall greenhouse gas emissions in the atmosphere are still going up and the decline will likely be smaller than what scientists say is necessary to avoid the worst impacts of climate change.

So far, the effects are just starting to appear. In China, the first country to lock down, greenhouse gas emissions dropped an estimated 25% in February as factories and industrial producers slowed output. That decreased coal burning, which has come back slowly since then.

"A month or two of shelter in place will drop carbon dioxide emissions a few percent here or there, but it won't change the year substantially unless we stay like this for some time," says Rob Jackson, environmental scientist at Stanford University.

The declines are still too small to be read by greenhouse gas observatories around the world, like the one on top of the Mauna Loa volcano in Hawaii, given the natural changes in atmosphere this time of year. Because much of the Earth's land mass is in the northern hemisphere, plants and forests there cause carbon levels to fluctuate as they bloom in the spring, drawing carbon dioxide from the air.

If countries continue shelter-at-home orders, emissions declines could be greater. The U.S. Energy Information Administration estimates U.S. emissions from gas and energy use could drop more than 7% this year, similar to a 2009 decline during the financial crisis.

Worldwide, early estimates put global emissions dropping around 4%. Still, that's less than the 7.6% the U.N. says is needed to avoid the worst impacts of climate change by limiting warming to 1.5 degrees Celsius.

To achieve those cuts, scientists say more fundamental changes are needed, like switching to renewable energy.

"This isn't the way we want to reduce our fossil fuel emissions," says Jackson. "We don't want tens of millions of people being out of work as a path to decarbonizing our economy. We need systemic change in our energy infrastructure and new green technologies."

Still, Jackson says the recent changes are providing useful insights.

"It's as if a third of the cars on the road were suddenly electric, running on clean electricity and the air pollution is plummeting," says Jackson. "It's really a remarkable experiment and it shows the benefits of clean energy."

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

A moment in Larry Mantle’s recent conversation with Steve Inskeep has stuck with me.

The NPR Morning Edition co-host was in our Pasadena studios to talk about his latest book, Imperfect Union. Asked how he approaches his day job, Inskeep told a story about the time he dispassionately called a heartbreaking loss for his high school football team. That “straight call” earned praise from a veteran broadcaster he admired. It’s a lesson, he said, that stayed with him.

“I may have a personal opinion; it doesn’t matter,” Inskeep told Mantle. “My job as a journalist is to get the facts right, that are in front of me, and you can do that even if you have a personal opinion.”

Mantle, who has hosted KPCC’s AirTalk for decades, responded: 

“You can’t do this work if you’re wired like an activist. I sort of see my wiring as more how a teacher would be, wired where you’re amassing information. You’re leading people through a story, and the joy is in people coming to their own conclusions.”

“If you’re an activist at all, you’re an activist for the truth,” Inskeep replied. 

Activists for truth. Finding joy in people reaching their own conclusions.

What a compelling description of what our newsroom strives to deliver every day to Southern Californians.

These were my thoughts even before my colleague at NPR came under attack for doing her job.

If you haven't been following the story, Secretary of State Mike Pompeo angrily objected to being questioned about Ukraine during an interview with All Things Considered co-host Mary Louise Kelly. Pompeo didn't care for Kelly's questions on air and the conversation grew even more contentious behind closed doors.

The next day he accused Kelly of lying about the topic of the interview and then reporting a conversation he claimed was off the record. [Including his odd demand she locate Ukraine on unmarked world map.]  Kelly has denied both claims and media outlets have reported on emails between her and Pompeo's staff that back up her assertion she told them the interview would go beyond questions about Iran.

Then, this week, the State Department denied credentials to NPR's Michele Kelemen, who'd been scheduled to cover Pompeo's trip to Europe.

NPR President and CEO John Lansing and Nancy Barnes, who heads news, are rightfully demanding answers.

Why does it matter? Because as Lansing notes having access to people in power is fundamental to "the role of journalism in America.

Get KPCC in your inbox

Breaking news alerts sent to your inbox

I want to take a few minutes to tell you more about how our newsroom works and why you’ll be hearing more from us about our mission and ambition.

Listeners may have noticed a new phrase on our air: “Democracy needs to be heard.” It’s a statement you’ll also start seeing on billboards and bus benches around Los Angeles.

It’s part of the first marketing campaign for our station in many years. The goal is to make more people aware of what we do and why we do it. We also want to grow our audience and our supporters, so we can do even more original journalism.

Southern California Public Radio — home to 89.3 KPCC, LAist Studios, and LAist.com — turns 20 this year. SCPR was born out of a belief that the region would embrace and support a news-focused NPR station serving Southern California with original programming and reporting.

In the two decades since, our members stepped up and helped us build what is now one of the biggest newsrooms in the region. We’ve gone from cramped quarters in the library of Pasadena City College, to a new headquarters in 2010, to today, when we have to scramble for desks for our growing operation.

If you’ve ever heard me on-air during a pledge drive, you’ve heard me talk about how remarkable it is that your support has fueled our ambition and growth. We’re the most listened to NPR station in Southern California. The public media model depends on people donating their hard-earned money because they believe in what we are doing. You don’t have to pay a dime to listen to us on your radio, or stream us on your smart speaker or our app. You’ll never hit a paywall when you visit our website.

Our relationship with you isn’t transactional — that’s one of the ways nonprofit member-supported newsrooms are different. Instead, we make a case that what we do matters, that it’s valuable to you — so valuable that you voluntarily support us (even though you can still listen and read if you don’t). 

That’s a powerful relationship.

It’s why we take community engagement so seriously. That means listening closely to your concerns, answering your questions, meeting you in person, thinking about how our coverage can be both for and about Southern Californians.

In September, we were awarded the first-ever Gather Award for engaged journalism from the Online News Association. In December, we won our second-in-a-row Champion of Curiosity Award for our breaking news coverage of the wildfires.

Our approach to engaged journalism has been transformational for coverage, and we’ve emerged as a clear leader in the industry — sharing what we’ve learned with other newsrooms.

***

We talk a lot about our public-service mission in this newsroom. It permeates how we approach stories. It’s why our reporters, producers, hosts and editors choose to work here. 

And we’ve made this promise to you:

“You deserve great local news — and we need your help to find those stories. We listen to what you’re curious about, what keeps you up at night, and who you want held accountable. We’re inviting you to be part of the conversation.”

We do this work because of you. We do it for you and with you. 

We’ve spent quite a bit of time thinking about how we’re finding and telling stories, and how we can do an even better job of delivering reporting that you won’t find anywhere else. We want our reporters to spend their energy on original stories (and not get stuck echoing information that everyone else is reporting). 

To that end, each reporter has their own individual mission statement to reflect their goals in covering communities and crucial issues. 

The free press is a cornerstone of democracy. That’s why in 1786 Thomas Jefferson wrote:

"Our liberty depends on the freedom of the press, and that cannot be limited without being lost." 

More than 200 years later, Nelson Mandela said: “A critical, independent and investigative press is the lifeblood of any democracy.”

Activists for truth. That means scrutinizing the information we receive from our sources or uncover through our reporting. It means giving you the context you need to consider what is fact and what is spin.

It’s truly an exciting time to work in our newsroom.

We have ambitious plans for coverage of the upcoming California primary and presidential election.

We have so much great work in progress — including three in-depth investigations scheduled to publish in the coming weeks.

Those stories took months to report, involving thousands of public documents, hundreds of miles of travel, and data analysis that no one else has done.

And it was only possible because of your support.  

Thank you.

Megan Garvey, Executive Editor

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

NFL Commissioner Roger Goodell talks during a press conference at the Hilton Hotel on Sept. 19, 2014 in New York City. Goodell spoke about the NFL's failure to address domestic violence, sexual assault and drug abuse in the league.; Credit: Elsa/Getty Images

Update 1:04 p.m. Goodell: 'Same mistakes can never be repeated'

Commissioner Roger Goodell says the NFL wants to implement new personal conduct policies by the Super Bowl. At a news conference Friday, Goodell made his first public statements in more than a week about the rash of NFL players involved in domestic violence. He did not announce any specific changes, but said he has not considered resigning.

"Unfortunately, over the past several weeks, we have seen all too much of the NFL doing wrong," he said. "That starts with me."

The league has faced increasing criticism that it has not acted quickly or emphatically enough concerning the domestic abuse cases.

The commissioner reiterated that he botched the handling of the Ray Rice case.

"The same mistakes can never be repeated," he said.

Goodell now oversees all personal conduct cases, deciding guilt and penalties.

He said he believes he has the support of the NFL's owners, his bosses.

"That has been clear to me," he said.

The Indianapolis Colts' Darius Butler was among those who tweeted criticism of the press conference:

Colts tweet 1

Colts tweet 2

The commissioner and some NFL teams have been heavily criticized for lenient or delayed punishment of Rice, Adrian Peterson and other players involved in recent domestic violence cases. Less than three weeks into the season, five such cases have made headlines, the others involving Greg Hardy, Ray McDonald and Jonathan Dwyer.

Vikings star running back Peterson, Carolina defensive end Hardy and Arizona running back Dwyer are on a special commissioner's exemption list and are being paid while they go through the legal process. McDonald, a defensive end for San Francisco, continues to practice and play while being investigated on suspicion of domestic violence.

As these cases have come to light, such groups as the National Organization of Women and league partners and sponsors have come down hard on the NFL to be more responsive in dealing with them. Congress also is watching to see how the NFL reacts.

In response to the criticism, the NFL announced it is partnering with a domestic violence hotline and a sexual violence resource center.

Goodell also said in a memo to the clubs late Thursday that within the next 30 days, all NFL and team personnel will participate in education sessions on domestic violence and sexual assault. The memo said the league will work with the union in providing the "information and tools to understand and recognize domestic violence and sexual assault."

The league will provide financial, operational and promotional support to the National Domestic Violence Hotline and the National Sexual Violence Resource Center.

12:07 p.m. Roger Goodell to break silence on domestic abuse and the NFL

Roger Goodell will make his first public statements in more than a week about the rash of NFL players involved in domestic violence when he holds a news conference Friday.

The NFL commissioner will address the league's personal conduct policy. The league has faced increasing criticism it has not acted quickly or emphatically enough concerning the domestic abuse cases.

His last public appearance was at a high school in North Carolina on Sept. 10.

The commissioner and some NFL teams have been heavily criticized for lenient or delayed punishment of Ray Rice, Adrian Peterson and other players involved in recent domestic violence cases. Less than three weeks into the season, five such cases have made headlines, the others involving Greg Hardy, Ray McDonald and Jonathan Dwyer.

Vikings star running back Peterson, Carolina defensive end Hardy and Arizona running back Dwyer are on a special commissioner's exemption list and are being paid while they go through the legal process. McDonald, a defensive end for San Francisco, continues to practice and play while being investigated on suspicion of domestic violence.

As these cases have come to light, such groups as the National Organization of Women and league partners and sponsors have come down hard on the NFL to be more responsive in dealing with them. Congress also is watching to see how the NFL reacts.

In response to the criticism, the NFL announced it is partnering with a domestic violence hotline and a sexual violence resource center.

Goodell also said in a memo to the clubs late Thursday that within the next 30 days, all NFL and team personnel will participate in education sessions on domestic violence and sexual assault. The memo said the league will work with the union in providing the "information and tools to understand and recognize domestic violence and sexual assault."

The league will provide financial, operational and promotional support to the National Domestic Violence Hotline and the National Sexual Violence Resource Center.

"These commitments will enable both the hotline and NSVRC to help more people affected by domestic violence and sexual assault," Goodell said in the memo.

The National Domestic Violence Hotline provides domestic violence victims and survivors access to a national network of resources and shelters. It is available 24 hours a day, seven days a week in 170 languages. Goodell noted that the hotline received 84 percent more calls from Sept. 8-15, and the organization said more than 50 percent of those calls went unanswered because of lack of staff.

"The hotline will add 25 full-time advocates over the next few weeks that will result in an additional 750 calls a day being answered," he said.

NSVRC supports sexual violence coalitions across the United States. The NFL's initial support will be directed toward state coalitions to provide additional resources to sexual assault hotlines.

This story has been updated.