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89 articles from PhysOrg

Understanding how microbiota thrive in their human hosts

A research team lead by scientists from the Max Planck Institute for Biology, Tübingen, Germany, has now made substantial progress in understanding how gut bacteria succeed in their human hosts on a molecular level. They investigated how bacteria produce inositol lipids, substances vital for many cellular processes in humans and other eukaryotes but hitherto rarely observed in bacteria. The...

Republicans and Democrats see their own party's falsehoods as more acceptable

Society recognizes that many politicians lie. In five new studies, researchers have examined how conservative and liberal Americans responded to media reports of politicians' falsehoods. Even accounting for partisan biases in how much people dismissed the reports as fake news and assumed the lies were unintentional, the studies consistently identified partisan evaluations in how much these...

Physicists confront the neutron lifetime puzzle

To solve a long-standing puzzle about how long a neutron can "live" outside an atomic nucleus, physicists entertained a wild but testable theory positing the existence of a right-handed version of our left-handed universe. They designed a mind-bending experiment at the Department of Energy's Oak Ridge National Laboratory to try to detect a particle that has been speculated but not spotted. If...

Study shows chemical's extent in the Fairbanks winter air

A chemical compound discovered in 2019 in the wintertime air of Fairbanks, Alaska accounts for a significant portion of the community's fine particulate pollution, according to new research that seeks to better understand the causes and makeup of the dirty air.

Help NASA scientists find clouds on Mars

NASA scientists hope to solve a fundamental mystery about Mars' atmosphere, and you can help. They've organized a project called Cloudspotting on Mars that invites the public to identify Martian clouds using the citizen science platform Zooniverse. The information may help researchers figure out why the planet's atmosphere is just 1% as dense as Earth's even though ample evidence suggests the...

Who trusts gene-edited foods? New study gauges public acceptance

Through CRISPR and other gene-editing technologies, researchers and developers are poised to bring dozens—if not hundreds—of new products to grocery stores: mushrooms with longer shelf lives, drought-resistant corn and bananas impervious to a fungus threatening the global supply. A few, including a soybean variety that produces a healthier cooking oil, are already being sold commercially in...

Climate change is shrinking and fragmenting salmon habitat

Salmon famously travel hundreds of miles upstream to reach their home waters to spawn, but climate change is shrinking their destination. A new study offers high-resolution details on how Chinook salmon habitats are being lost on Bear Valley Creek, a headwater stream of the Salmon River in central Idaho.

New technology turns the whole fish into food

In the meat industry, it's common practice to turn the whole animal into food products. In the fish industry, over half of the weight of the fish ends up as side-streams which never reach our plates. This takes a toll on the environment and is out of step with Swedish food and fisheries strategies. Now, food researchers at Chalmers are introducing a new sorting technology that means we get five...

Human urine-derived stem cells have robust regenerative potential

The Wake Forest Institute for Regenerative Medicine (WFIRM) researchers, who were the first to identify that stem cells in human urine have potential for tissue regenerative effects, continue their investigation into the power of these cells. In their latest published study, they focus on how telomerase activity affects the regenerative potential of these and other types of stem cells.

Valleytronics researchers fabricate novel 2D material enjoying long-life excitons

The emerging field of valleytronics, which exploits the momentum preference of excited electrons, or excitons, in a variety of optoelectronic devices, is closely tied to the fabrication of novel 2D materials just atoms thick. This month, a group of valleytronics researchers from Central South University in Changsha, China, have developed one such 2D material that significantly enhances the utility...

Understanding earthquakes triggered by wastewater injection

Since 2009, many central U.S. residents have faced increasing earthquake activity. Research has suggested that these tremors are linked to wastewater injection into deep wells by oil and gas companies. However, the precise dynamics of these earthquakes are still being revealed.