Aerosol science is of utmost importance for both climate and public health research, and in recent years X-ray techniques have proven effective tools for aerosol-particle characterization. To date, such methods have often involved the study of particles collected onto a substrate, but a high photon flux may cause radiation damage to such deposited particles and volatile components can potentially react with the surrounding environment after sampling. These and many other factors make studies on collected aerosol particles challenging. Therefore, a new aerosol sample-delivery system dedicated to X-ray photoelectron spectroscopy studies of aerosol particles and gas molecules in-flight has been developed at the MAX IV Laboratory. The aerosol particles are brought from atmospheric pressure to vacuum in a continuous flow, ensuring that the sample is constantly renewed, thus avoiding radiation damage, and allowing measurements on the true unsupported aerosol. At the same time, available gas molecules can be used for energy calibration and to study gas-particle partitioning. The design features of the aerosol sample-delivery system and important information on the operation procedures are described in detail here. Furthermore, to demonstrate the experimental range of the aerosol sample-delivery system, results from aerosol particles of different shape, size and composition are presented, including inorganic atmospheric aerosols, secondary organic aerosols and engineered nanoparticles.

Single-particle imaging using X-ray free-electron lasers (XFELs) is a promising technique for observing nanoscale biological samples under near-physiological conditions. However, as the sample's orientation in each diffraction pattern is unknown, advanced algorithms are required to reconstruct the 3D diffraction intensity volume and subsequently the sample's density model. While most approaches perform 3D reconstruction via determining the orientation of each diffraction pattern, a correlation-based approach utilizes the averaged spatial correlations of diffraction intensities over all patterns, making it well suited for processing experimental data with a poor signal-to-noise ratio of individual patterns. Here, a method is proposed to determine the 3D structure of a sample by analyzing the double, triple and quadruple spatial correlations in diffraction patterns. This ab initio method can reconstruct the basic shape of an irregular unsymmetric 3D sample without requiring any prior knowledge of the sample. The impact of background and noise on correlations is investigated and corrected to ensure the success of reconstruction under simulated experimental conditions. Additionally, the feasibility of using the correlation-based approach to process incomplete partial diffraction patterns is demonstrated. The proposed method is a variable addition to existing algorithms for 3D reconstruction and will further promote the development and adoption of XFEL single-particle imaging techniques.

The orientation ordering and assembly behavior of silica–nickel Janus particles in a static external magnetic field were probed by ultra small-angle X-ray scattering (USAXS). Even in a weak applied field, the net magnetic moments of the individual particles aligned in the direction of the field, as indicated by the anisotropy in the recorded USAXS patterns. X-ray photon correlation spectroscopy (XPCS) measurements on these suspensions revealed that the corresponding particle dynamics are primarily Brownian diffusion [Zinn, Sharpnack & Narayanan (2023). Soft Matter, 19, 2311–2318]. At higher fields, the magnetic forces led to chain-like configurations of particles, as indicated by an additional feature in the USAXS pattern. A theoretical framework is provided for the quantitative interpretation of the observed anisotropic scattering diagrams and the corresponding degree of orientation. No anisotropy was detected when the magnetic field was applied along the beam direction, which is also replicated by the model. The method presented here could be useful for the interpretation of oriented scattering patterns from a wide variety of particulate systems. The combination of USAXS and XPCS is a powerful approach for investigating asymmetric colloidal particles in external fields.

Ultra-intense, ultra-fast X-ray free-electron lasers (XFELs) enable the imaging of single protein molecules under ambient temperature and pressure. A crucial aspect of structure reconstruction involves determining the relative orientations of each diffraction pattern and recovering the missing phase information. In this paper, we introduce a predicted model-aided algorithm for orientation determination and phase retrieval, which has been tested on various simulated datasets and has shown significant improvements in the success rate, accuracy and efficiency of XFEL data reconstruction.

Ultrafast, high-intensity X-ray free-electron lasers can perform diffraction imaging of single protein molecules. Various algorithms have been developed to determine the orientation of each single-particle diffraction pattern and reconstruct the 3D diffraction intensity. Most of these algorithms rely on the premise that all diffraction patterns originate from identical protein molecules. However, in actual experiments, diffraction patterns from multiple different molecules may be collected simultaneously. Here, we propose a predicted model-aided one-step classification–multireconstruction algorithm that can handle mixed diffraction patterns from various molecules. The algorithm uses predicted structures of different protein molecules as templates to classify diffraction patterns based on correlation coefficients and determines orientations using a correlation maximization method. Tests on simulated data demonstrated high accuracy and efficiency in classification and reconstruction.

In the title compound, C20H18O4, the dihedral angle between the 2H-chromen-2-one ring system and the phenyl ring is 89.12 (5)°. In the crystal, the mol­ecules are connected through C—H⋯O hydrogen bonds to generate [010] double chains that are reinforced by weak aromatic π–π stacking inter­actions. The unit-cell packing can be described as a tilted herringbone motif. The H⋯H, H⋯O/O⋯H, H⋯C/C⋯H and C⋯C contacts contribute 46.7, 24.2, 16.7 and 7.6%, respectively, to its Hirshfeld surface.

Fluctuation X-ray scattering (FXS) offers a complementary approach for nano- and bioparticle imaging with an X-ray free-electron laser (XFEL), by extracting structural information from correlations in scattered XFEL pulses. Here a workflow is presented for single-particle structure determination using FXS. The workflow includes procedures for extracting the rotational invariants from FXS patterns, performing structure reconstructions via iterative phasing of the invariants, and aligning and averaging multiple reconstructions. The reconstruction pipeline is implemented in the open-source software xFrame and its functionality is demonstrated on several simulated structures.

Controlling the shape and size dispersivity and crystallinity of nanoparticles (NPs) has been a challenge in identifying these parameters' role in the physical and chemical properties of NPs. The need for reliable quantitative tools for analyzing the dispersivity and crystallinity of NPs is a considerable problem in optimizing scalable synthesis routes capable of controlling NP properties. The most common tools are electron microscopy (EM) and X-ray scattering techniques. However, each technique has different susceptibility to these parameters, implying that more than one technique is necessary to characterize NP systems with maximum reliability. Wide-angle X-ray scattering (WAXS) is mandatory to access information on crystallinity. In contrast, EM or small-angle X-ray scattering (SAXS) is required to access information on whole NP sizes. EM provides average values on relatively small ensembles in contrast to the bulk values accessed by X-ray techniques. Besides the fact that the SAXS and WAXS techniques have different susceptibilities to size distributions, SAXS is easily affected by NP–NP interaction distances. Because of all the variables involved, there have yet to be proposed methodologies for cross-analyzing data from two techniques that can provide reliable quantitative results of dispersivity and crystallinity. In this work, a SAXS/WAXS-based methodology is proposed for simultaneously quantifying size distribution and degree of crystallinity of NPs. The most reliable easy-to-access size result for each technique is demonstrated by computer simulation. Strategies on how to compare these results and how to identify NP–NP interaction effects underneath the SAXS intensity curve are presented. Experimental results are shown for cubic-like CeO2 NPs. WAXS size results from two analytical procedures are compared, line-profile fitting of individual diffraction peaks in opposition to whole pattern fitting. The impact of shape dispersivity is also evaluated. Extension of the proposed methodology for cross-analyzing EM and WAXS data is possible.

Coherent diffractive imaging with X-ray free-electron lasers could enable structural studies of macromolecules at room temperature. This type of experiment could provide a means to study structural dynamics on the femtosecond timescale. However, the diffraction from a single protein is weak compared with the incoherent scattering from background sources, which negatively affects the reconstruction analysis. This work evaluates the effects of the presence of background on the analysis pipeline. Background measurements from the European X-ray Free-Electron Laser were combined with simulated diffraction patterns and treated by a standard reconstruction procedure, including orientation recovery with the expand, maximize and compress algorithm and 3D phase retrieval. Background scattering did have an adverse effect on the estimated resolution of the reconstructed density maps. Still, the reconstructions generally worked when the signal-to-background ratio was 0.6 or better, in the momentum transfer shell of the highest reconstructed resolution. The results also suggest that the signal-to-background requirement increases at higher resolution. This study gives an indication of what is possible at current setups at X-ray free-electron lasers with regards to expected background strength and establishes a target for experimental optimization of the background.

Here, it is investigated how optical properties of single scatterers in interacting multi-particle systems influence measurable structure factors. Both particles with linear gradients of their scattering length density and core–shell structures evoke characteristic deviations between the weighted sum 〈S(Q)〉 of partial structure factors in a multi-component system and experimentally accessible measurable structure factors SM(Q). While 〈S(Q)〉 contains only the structural information of self-organizing systems, SM(Q) is additionally influenced by the optical properties of their constituents, resulting in features such as changing amplitudes, additional peaks in the low-wavevector region or splitting of higher-order maxima, which are not related to structural reasons. It is shown that these effects can be systematically categorized according to the qualitative behaviour of the form factor in the Guinier region, which enables assessing the suitability of experimentally obtained structure factors to genuinely represent the microstructure of complex systems free from any particular model assumption. Hence, a careful data analysis regarding size distribution and optical properties of single scatterers is mandatory to avoid a misinterpretation of measurable structure factors.

PayPoint has announced its partnership with

Foreign exchange brand Travelex has announced its partners...

The Lufthansa Group has teamed up with

Mirakl has announced its partnership with

Paymentology has entered into a referral partnership with...

Chinese fast-fashion retailer Shein has introduced its first...

Millicent Simmonds, Noah Jupe and Emily Blunt return in “A Quiet Place, Part II.”; Credit: Paramount Pictures

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

Canada-based fintech firm Nuvei has partnered with

TerraPay, a global money movement company,...

Peruvian fintech B89 has announced a partnership with Brazil-based...

Thunes, a global cross-border payments platform, has announced a...

FOMO Pay, a payment institution based in Singapore, has...

Canada-based financial institution TD Bank Group (TD) has...

US-based fintech Felix Pago has announced a partnership...

SEB Embedded has selected Thought Machine’s cloud-native core banking system, Vault Core, as the foundation for its latest service offering.

Singapore-based TransferTo has partnered with the Pan-African Ecobank Group in order to expand financial access and cross-border payments across the region of Africa.

Mbank has partnered with Al Etihad Payments Company (AEP), a Central Bank of the UAE (CBUAE) subsidiary, to introduce the Aani Instant Payment Platform on its mobile application.

NASA released a workshop report on the UNBOUND-FEW workshop series, which was facilitated in part by Tribal Resilience Learning Network staff from the Alaska CASC. The workshop report reveals key recommendations for making data tools more useful for climate adaptation planning.

The Pathfinding Partnerships Award from CO-LABS recognizes impactful, collaborative research projects organized by four or more research entities, including federal labs, in Colorado. This year, the Wildfire Research (WiRē) team received this award for their support of evidence-based community wildfire education to help communities live with wildfire. 

Lawmakers in Washington, D.C., have reached a preliminary, bipartisan agreement on police reform after months of closely watched debate on the topic.

Sens. Tim Scott, R-S.C., and Cory Booker, D-N.J., and Rep. Karen Bass, D-Calif., announced the agreement on Thursday evening.

"After months of working in good faith, we have reached an agreement on a framework addressing the major issues for bipartisan police reform," the lawmakers said in a joint statement.

"There is still more work to be done on the final bill, and nothing is agreed to until everything is agreed to. Over the next few weeks we look forward to continuing our work toward getting a finalized proposal across the finish line."

The exact details of the plan were not immediately clear.

The issue of reforming qualified immunity, to make it easier to sue police officers over allegations of brutality, had been a sticking point in negotiations. The police use of chokeholds was another debated provision.

The effort to reform U.S. policing comes after several years of increasing pressure to better understand and regulate the way officers interact with the communities they patrol.

The high-profile deaths of several Black people — many unarmed — at the hands of police — who have in some notable instances been white — have been the catalyst for the police reform movement.

The Democratic-led House had approved the George Floyd Justice in Policing Act — named after one of those Black people killed by police — in early March, and President Biden had hoped Congress would pass the reform effort by the first anniversary of Floyd's death in late May.

But Bass had said then that getting "a substantive piece of legislation" is "far more important than a specific date."

Floyd's murderer, former Minneapolis police officer Derek Chauvin, is set to be sentenced to prison on Friday.

White House press secretary Jen Psaki said in a statement Thursday that Biden "is grateful to Rep. Bass, Sen. Booker, and Sen. Scott for all of their hard work on police reform, and he looks forward to collaborating with them on the path ahead."

The topic of police reform has divided the nation across party lines, with progressives accusing the right of seeking to maintain an antiquated and all-too-powerful law enforcement apparatus. Conservatives say the left has blamed the actions of some officers on the institution itself, turning the topic of police support and "blue lives" into more ammunition for the ongoing culture war.

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

Assistant Attorney General Kristen Clarke for the Justice Department's Civil Rights Division speaks during a news conference Friday announcing a lawsuit against the state of Georgia for its new voting law. Attorney General Merrick Garland is at right.; Credit: Jim Watson/AFP via Getty Images

Attorney General Merrick Garland announced Friday that the U.S. Justice Department is suing the state of Georgia over its new voting law, saying that the controversial measure is intended to restrict ballot access to Black voters.

"Our complaint alleges that recent changes to Georgia's election laws were enacted with the purpose of denying or abridging the right of Black Georgians to vote on account of their race or color, in violation of Section 2 of the Voting Rights Act," Garland said at a news conference.

The lawsuit marks the first major action from the Biden administration to combat a series of new restrictive voting measures passed by Republican-led state legislatures. And it came on the eighth anniversary of the U.S. Supreme Court decision to gut another key provision of the landmark Voting Rights Act, Section 5.

Garland noted that Georgia experienced record voter turnout and participation in the 2020 election cycle.

In March, Georgia Gov. Brian Kemp, a Republican, signed Senate Bill 202, a 98-page omnibus measure that makes sweeping changes to the state's absentee voting rules, adds new voter identification mandates and nearly cuts in half the amount of time for voters to request a mail-in ballot. It also expands early voting access for most counties and formally codifies Sunday voting hours as optional.

The legislation outlaws passing out food or drinks to voters within 150 feet of a polling place or too close to voters waiting in line, a provision that Assistant Attorney General Kristen Clarke, who heads the department's Civil Rights Division, highlighted at the press conference.

"Historically, minority voters in Georgia have been disproportionately more likely to wait in long lines to vote in person on Election Day," she said. "Given those long and protracted wait times, civic groups, including churches, have at times provided food and water to voters in line to make their wait more comfortable. As we allege in our complaint, this needless ban was passed with unlawful discriminatory intent."

Clarke also said the Georgia Legislature passed the bill through "a rushed process that departed from normal practice and procedure."

"The version of the bill that passed the state Senate ... was three pages long. Days later, the bill ballooned into over 90 pages in the House. The House held less than two hours of floor debate on the newly inflated SB 202 before Gov. Kemp signed it into law the same day," she said. "These legislative actions occurred at a time when the Black population in Georgia continues to steadily increase, and after a historic election that saw record voter turnout across the state, particularly for absentee voting, which Black voters are now more likely to use than white voters."

Garland said the lawsuit is the first of "many steps" the department is taking to protect the right to vote for all eligible voters. He said the Civil Rights Division will continue to examine voting laws that other states have passed.

"We will not hesitate to act," Garland said.

The Justice Department announced this month it would vigorously defend voting rights. Garland said that the department will double the number of voter enfranchisement lawyers and focus attention on litigation related to voting rights.

In response to the filing, Kemp said the lawsuit is "born out of the lies and misinformation the Biden administration has pushed against Georgia's Election Integrity Act from the start."

"[Biden and his allies] are weaponizing the U.S. Department of Justice to carry out their far-left agenda that undermines election integrity and empowers federal government overreach in our democracy," he said in a statement.

Georgia Secretary of State Brad Raffensperger, another Republican who notably defended the state's administration of the 2020 election, said in a statement he "looks forward to ... beating [the administration] in court."

Garland's announcement comes just days after Senate Republicans united to block Democrats' attempts to pass sweeping voting rights legislation.

Senate Judiciary Chairman Dick Durbin, D-Ill., tweeted his approval of the lawsuit shortly after the announcement Friday.

"If Republicans think the fight for voting rights ended with their filibuster of the For the People Act, they are sorely mistaken," he wrote. "Glad to see the Biden Administration is joining this effort. We must protect our democracy."

The Republican National Committee also linked the failed Senate vote to the Department of Justice's lawsuit.

"After failing to sell the partisan federal election takeover known as H.R. 1 to the American people, Joe Biden is now weaponizing the Justice Department to attack election integrity," RNC Chair Ronna McDaniel said in a statement.

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

Attorney General Merrick Garland ordered a pause on federal executions Thursday while the Justice Department reviews policies and procedures on capital punishment.; Credit: Win McNamee/Getty Images

Attorney General Merrick Garland has imposed a moratorium on scheduling federal executions, the Department of Justice announced on Thursday. The department will review its policies and procedures on capital punishment, following a wave of federal executions carried out under the Trump administration.

In a memo to the Justice Department, Garland justified his decision to halt the deeply controversial practice, citing factors including its capricious application and outsized impact on people of color.

"The Department of Justice must ensure that everyone in the federal criminal justice system is not only afforded the rights guaranteed by the Constitution and laws of the United States, but is also treated fairly and humanely. That obligation has special force in capital cases," Garland said in the memo.

"Serious concerns have been raised about the continued use of the death penalty across the country, including arbitrariness in its application, disparate impact on people of color, and the troubling number of exonerations in capital and other serious cases," he added. "Those weighty concerns deserve careful study and evaluation by lawmakers."

Under former President Donald Trump, the federal government carried out its first executions in a generation last year, with 13 inmates put to death in Trump's final year in office. That included an unprecedented number of federal killings carried out in the last days of his single-term presidency, bucking a nearly century-and-a-half practice of pausing capital punishments during the presidential exchange of power.

Then-Attorney General William Barr said the executions were being carried out in cases of "staggeringly brutal murders." Civil rights activists had rallied to spare the lives of those on death row. Concerns of how humanely the sentences could be carried out, as well as the recent exonerations of a number of death row inmates, were major factors in the demonstrations to cease state-sanctioned killings.

"The Department must take care to scrupulously maintain our commitment to fairness and humane treatment in the administration of existing federal laws governing capital sentences," Garland said in his memo on Thursday.

President Biden, who nominated Garland to the top law enforcement post, opposes capital punishment. During his campaign, Biden pledged to pass legislation to end the federal death penalty.

Some congressional Democrats have been working on such legislation, but no action has been taken. Some progressives and activists opposed to capital punishment had been expressing frustration that they have not seen more movement on the issue from Biden.

"A moratorium on federal executions is one step in the right direction, but it is not enough," said Ruth Friedman, director of the Federal Capital Habeas Project. "We know the federal death penalty system is marred by racial bias, arbitrariness, over-reaching, and grievous mistakes by defense lawyers and prosecutors that make it broken beyond repair."

Friedman said Biden should commute all federal death sentences, warning that a pause alone "will just leave these intractable issues unremedied and pave the way for another unconscionable bloodbath like we saw last year."

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

Still of Emily Blunt and Noah Jupe in the film “A Quiet Place Part II.”; Credit: Paramount Pictures

Larry Mantle and KPCC film critics Lael Loewenstein, Christy Lemire and Charles Solomon review this weekend’s new movie releases on streaming and on demand platforms.

• "A Quiet Place Part II," in wide release

• "Cruella," in wide release & Disney+

• "Dog Gone Trouble," on Netflix

• "Pretty Guardian Sailor Moon Eternal The Movie," on Netflix June 3

• "Moby Doc," In Select Theaters (check your local listings); VOD (including FandangoNow, iTunes, Vudu); Laemmle’s Virtual Cinema June 4

• "Changing The Game," on Hulu June 1

• "Port Authority," Cinelounge Sunset Hollywood; Laemmle’s Virtual Cinema; Digital/VOD (including Vudu, Google Play, FandangoNow) June 1

• "Plan B," on Hulu

• "Borat Supplemental Reportings," on Amazon Prime Video

• "Dead Pigs," on Laemmle’s Virtual Cinema

Our FilmWeek critics have been curating personal lists of their favorite TV shows and movies to binge-watch during self-quarantine. You can see recommendations from each of the critics and where you can watch them here.

Guests:

Christy Lemire, film critic for KPCC, RogerEbert.com and co-host of the ‘Breakfast All Day’ podcast; she tweets @christylemire

Lael Loewenstein, film critic for KPCC and film columnist for the Santa Monica Daily Press; she tweets @LAELLO

Charles Solomon, film critic for KPCC, Animation Scoop and Animation Magazine

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

This Buy-rated Canadian explorer-developer is working to achieve first mover status in this emerging clean energy space. Find out what all it has done and is doing.

Skyharbour Resources Ltd. (SYH:TSX.V; SYHBF:OTCQX; SC1P:FSE) announced it has entered into an agreement with Hatchet Uranium Corp. to acquire interest in several of its projects. One analyst says the "spotlight" is on uranium juniors as the energy transition drives a heightened demand for power sources.

This Buy-rated Canadian explorer-developer is working to achieve first mover status in this emerging clean energy space. Find out what all it has done and is doing.

Skyharbour Resources Ltd. (SYH:TSX.V; SYHBF:OTCQX; SC1P:FSE) announced it has entered into an agreement with Hatchet Uranium Corp. to acquire interest in several of its projects. One analyst says the "spotlight" is on uranium juniors as the energy transition drives a heightened demand for power sources.

Traffic on Interstate 95 was diverted for hours after a group of armed men fled from police near Wakefield, Mass. on Saturday. Massachusetts state police say 11 suspects have been taken into custody.; Credit: Michael Dwyer/AP

Eleven people were taken into custody Saturday after an hours-long standoff with police early Saturday outside Boston.

While police engaged in negotiation, members of the group engaged the public on social media, saying their group was called "Rise of the Moors."

The heavily armed men were said to be driving from Rhode Island to Maine for "training."

The incident started around 1:30 a.m., when state police noticed two cars stopped at the side of I-95 near Wakefield, Mass., apparently out of fuel. As troopers stopped to assist, they noticed that some individuals near the cars had "military-style" gear, and were carrying long guns and pistols, Massachusetts State Police Col. Christopher Mason told reporters.

"You can imagine 11 armed individuals standing with long guns slung on an interstate highway at 2 in the morning certainly raises concerns and is not consistent with the firearms laws that we have in Massachusetts," Mason said.

Police requested backup, and thus began a standoff that lasted several hours. The men refused to lower their weapons, saying that they "don't recognize our laws," police said. Some of the armed men fled into a nearby wooded area, police said, and a portion of I-95 was closed for several hours.

The standoff was broadcast on social media

Around 4 a.m., a man whom the Boston Globe identified as Jamhal Talib Abdullah Bey said he was broadcasting live from I-95 and said that he told police they had nothing to fear.

"I reassured them that we are not sovereign citizens," a man who appeared to be Bey said in a live-streamed video. "I reassured them that we are not Black identity extremists. I reassured them that we are not anti-police. I reassured them that we are not anti-government. I reassured them that these men here will not be pointing guns at them. I reassured them that we are trying to come to a peaceful resolution."

"We're going to our private land to train, which is our Second Amendment right," he said, showing a vehicle he said contained camping equipment.

As police tactical teams brought in armored vehicles to surround the area, and negotiators interacted with the men, they ultimately surrendered. Middlesex County District Attorney Marian Ryan told reporters the suspects were expected to appear in court on Tuesday morning.

State police "don't have any knowledge about this particular specific group" but as state police "it is not unusual for us to encounter people that have sovereign citizen ideologies — I'm not saying that this group does — but we have had those encounters before in the past," Mason said at a Saturday morning press briefing.

"We train to those encounters," Mason continued. "We very much understand the philosophy that underlies that mindset. And we train our officers, actually, at the academy, on these interactions and how to de-escalate those situations, and how to engage with people that have that philosophy and mindset and resolve those situations in a peaceful manner."

The group calls itself "Rise of the Moors"

The same man appearing to be Bey said in a later video: "They keep portraying us as being anti-government, but we're not anti-government at all."

The group's website lists Bey as a leader of the "Rhode Island State Republic and Providence Plantations." According to the site, Bey served in the military for four years, some or all of that time in the Marines, after which he began studying "Moorish Science."

That website, "Rise of the Moors," explains that Moors are not "sovereign citizens" because "sovereignty does not stand alone," but can rather be considered synonymous with "nationality."

"The record show that the Moors are the organic or original sovereigns of this land — America," the FAQ says. "When we declare our nationality as Moorish Americans we are taking back the position as the aboriginal people of the land, to which the sovereign power is vested in."

Bey's group may be associated with the Moorish sovereign citizen movement, which the Southern Poverty Law Center characterizes as an offshoot of the antigovernment sovereign citizens movement. Moorish sovereigns "have come into conflict with federal and state authorities over their refusal to obey laws and government regulations," SPLC writes.

"The Moorish Sovereign movement is a rapidly growing group of people who believe that they belong to a sovereign nation that has a treaty with the US but otherwise operates outside of the federal and state laws," JJ MacNab, a fellow at George Washington University's Program on Extremism, explained on Twitter.

"They rely on an alternative history that borrows from Moorish Science Temple, Black Hebrew Israelism, Nation of Islam, UFO theories, phony Native American tribes, and the pseudo-legal arguments crafted by white supremacist 'patriot' groups in the 1970s," MacNab said.

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

Louise Ackerman serves as the Chairwoman for Alcohol and Substance Abuse Prevention (A.S.A.P.) of Catawba County. A.S.A.P. is a volunteer coalition made up of Catawba County residents with members from all segments of the community, including education, law enforcement, the criminal justice system, the faith community, mental health, social services, public health, local business, parents and youth that work together to combat underage drinking and substance abuse.

The North Carolina Veterans Park in Fayetteville includes a visitor�s center, gardens, fountains, sculpture and displays. Five Catawba County residents, including World War II veteran Carmie Cook, had a �hand� in the park�s creation.

The United States Environmental Planning Agency (USEPA) has announced that Catawba County will be classified as �attainment� from its current �nonattainment� designation for Particulate Matter 2.5 (PM 2.5) on December 19, 2011. PM 2.5 (fine particle pollution) refers to tiny particles of droplets in the air that are two and one half microns or less in width. Two and one half microns is about thirty times smaller than the width of a human hair.

Catawba County Public Health has earned reaccreditation from the North Carolina Local Health Department Accreditation Board.

Catawba County Board of Commissioners adopts resolution supporting citizen participation in government through elections in Catawba County.

As the recent spread of West Nile virus and the anthrax scare of 2001 dramatically illustrate, America faces a variety of new health challenges in the 21st century, along with a number of persistent problems, such as racial disparities in health status and care delivery.

One of the nation’s largest surveys of crime victims is likely undercounting incidences of rape and sexual assault, making it difficult to ensure that adequate law enforcement resources and support services are available for victims, says a new report by the National Research Council.

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.

The U.S. DRIVE Partnership – a government-industry partnership that fosters the development of precompetitive and innovative technologies for clean and efficient light-duty vehicles – has made significant progress in many technical areas including advanced combustion technologies, durability and cost of hydrogen fuel cells, and electric drive systems such as motors, power electronics, and batteries, says a new report by the National Academies of Sciences, Engineering, and Medicine.

Assistive products and technologies – such as wheelchairs, upper-limb prostheses, and hearing and speech devices – hold promise for partially or fully mitigating the effects of impairments and enabling people with disabilities to work, but in some cases environmental and personal factors create additional barriers to employment, says a new report from the National Academies of Sciences, Engineering, and Medicine.

The U.S. National Academies of Sciences, Engineering, and Medicine are now serving as the host for the InterAcademy Partnership for Research (IAP-R) secretariat.