6,773 results
6,773 results for: Bears
- Climate
Bering Sea winter ice shrank to its lowest level in 5,500 years in 2018
Peat cores that record five millennia of climate shifts in the Arctic region suggest recent ice loss is linked to rising carbon dioxide levels.
- Life
How tardigrades protect their DNA to defy death
Tardigrades encase their DNA in a cloud of protective protein to shield from damage by radiation or drying out.
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Susan Milius, your guide to the peculiarities of nature
Editor in chief Nancy Shute writes about the rambling route Susan Milius, life sciences writer, took before landing at Science News. And how we're all richer for her writing.
- Health & Medicine
A bioethicist says scientists owe clinical trial volunteers support
Researchers should be aware that many insurance policies do not cover experimental procedures, including side effects that may happen afterward.
- Science & Society
All kinds of outbreaks, from COVID-19 to violence, share the same principles
Adam Kucharski talks about his new book ‘The Rules of Contagion,’ a timely read during the coronavirus pandemic.
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- Earth
Chicxulub collision put Earth’s crust in hot water for over a million years
An asteroid impact 66 million years ago caused hot fluids to circulate in the crust, creating conditions that may have been ideal for microbial life.
- Space
Phosphorus, a key ingredient of life, has been found in a newborn star system
Astrochemists map phosphorus-bearing molecules in a star-forming cloud, giving clues to how this vital element may have arrived on Earth.
- Anthropology
This 300,000-year-old skull may be from an African ‘ghost’ population
The age of the mysterious Broken Hill fossil suggests it came from a hominid that lived around the same time as both Homo sapiens and H. naledi.
- Psychology
Why do we miss the rituals put on hold by the COVID-19 pandemic?
Even solitary rituals bind us to our groups and help calm anxieties. What happens when those traditions are upended?
- Plants
How passion, luck and sweat saved some of North America’s rarest plants
As the list of plants no longer found in the wild grows, botanists and conservationists search for signs of hope — and sometimes get lucky.
- Health & Medicine
Toddlers tend to opt for the last thing in a set, so craft your questions carefully
Two-year-olds demonstrate a verbal quirk that makes their answers less reliable.
