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Dinosaurs' Air Sacs Evolved Many Times and Let Them Take Over the World
An extensive system of air sacs, evolved over and over, let dinosaurs grow larger without sacrificing strength
Tree Roots May Have Set Off a Mass Extinction
The evolution of terrestrial plant roots could have kicked off large-scale extinctions by throwing the planet’s mineral cycle into disarray
Inside the Scientific Quest to Save (Most of) the World's Parasites
Scientists are on a mission to save parasites—not to kill them. Climate change is already doing an increasingly good job at the latter, and that could be a big problem for the world.
Evolution Turns These Knobs to Make a Hummingbird Hyperquick and a Cavefish Sluggishly Slow
By tuning the enzymes that control the breakdown or storage of sugars, hummingbirds and cavefish adapt their metabolism to meet the demands of the vastly different environments in which they live
Mammals That Live Together Live Longer
Mammal species that live in groups seems to live longer than those that lead solitary lives
How Plants' Plumbing Let Them Conquer the World
To protect from deadly drought and make it on land, plants developed complicated inner plumbing
Why COVID's XBB.1.5 'Kraken' Variant Is So Contagious
A new variant of the virus that causes COVID has mutations that make it more transmissible, but vaccines are still likely to protect against severe disease
The Biggest Health and Biology Breakthroughs of 2022
From reviving dead pig organs to measuring viruses in our poop, here are some of the most intriguing medical advances of the year
Ancient Sawfish Help to Illuminate Our Teeth's Scaly Origins
Weird new evidence on tooth evolution tips the scales even more toward scales
Chances of Finding COVID-Causing Virus Ancestor 'Almost Nil,' Virologists Say
vendredi 11 novembre 2022 par Smriti Mallapaty, Nature magazine — Biology, Evolution, Genetics, Health
A genome analysis finds SARS-CoV-2 and bat coronaviruses shared an ancestor just a few years ago, but extensive recombination has muddied the picture
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