Here is a summary of current scientific news.
Greenland’s isolated polar bear population adapts to climate change
An isolated population of polar bears in Greenland have ably adapted to the decline of the sea ice on which they depend as a sealing platform, offering a glimmer of hope for this species in at least some places of global warming. Arctic. This population of several hundred bears, inhabiting part of the southeast coast of Greenland in the Denmark Strait, survived with only brief access to the ice formed from frozen seawater by instead hunting chunks of freshwater ice breaking away from the massive Greenland Ice Sheet, researchers said on Thursday.
US issues new warnings about ‘eternal chemicals’ in drinking water
The US Environmental Protection Agency on Wednesday issued new warnings for man-made pollutants in drinking water known as ‘eternal chemicals’, saying the toxins can still be harmful even at such low levels they are not detectable. The family of toxic chemicals known as per- and polyfluoroalkyl substances, or PFAS, have been used for decades in household products such as nonstick cookware, stain and water-resistant textiles, and in fire-fighting foams and industrial products.
Prior infection plus 3 doses of vaccine is better than Omicron; neurological symptoms of COVID can last for months
Here is a summary of some recent studies on COVID-19. They include research that deserves further study to corroborate the findings and that has not yet been certified by peer review. Vaccination plus prior COVID best protects against Omicron
Ancient DNA Solves the Mystery About the Origin of the Medieval Black Death
Ancient DNA from bubonic plague victims buried in cemeteries on the ancient Silk Road trade route in Central Asia has helped solve a lingering mystery, identifying a region in northern Kyrgyzstan as the starting point of the black plague that killed tens of millions of people in the mid-14th century.
Researchers said on Wednesday they had recovered ancient DNA traces of the plague bacterium Yersinia pestis from the teeth of three women buried at a medieval Nestorian Christian community in the Chu Valley near Lake Issyk Kul in the foothills of the mountains. of the Tian Shan who perished in 1338-1339. . The first documented deaths elsewhere in the pandemic date back to 1346.
In Tarantula Nebula, a breathtaking view of the birth of stars
Astronomers have peered into a teeming stellar nursery in the Tarantula Nebula – a colossal cloud of gas and dust next to our galaxy – gaining a new understanding of the dynamics of star formation while getting a dazzling picture of the cosmos. The researchers said Wednesday their observations offer insight into the interplay between the irresistible force of gravity that drives star formation and the huge amounts of energy young massive stars inject into their nearby environments that could inhibit stellar birth. .
(This story has not been edited by the Devdiscourse team and is auto-generated from a syndicated feed.)