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Why COVID's XBB.1.5 'Kraken' Variant Is So Contagious

mardi 10 janvier 2023 par Ed Browne — Biology, Evolution, Health, Epidemiology

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

Scientific American

The Biggest Health and Biology Breakthroughs of 2022

mardi 20 décembre 2022 par Tanya Lewis — Biology, Evolution, Health, Vaccines

From reviving dead pig organs to measuring viruses in our poop, here are some of the most intriguing medical advances of the year

Scientific American

Ancient Sawfish Help to Illuminate Our Teeth's Scaly Origins

vendredi 2 décembre 2022 par Daniel Leonard — Advances, Biology, Evolution

Weird new evidence on tooth evolution tips the scales even more toward scales

Scientific American

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

Scientific American

Geologic Activity Lets Microbes Mingle Deep Underground

jeudi 10 novembre 2022 par Joanna Thompson — Advances, Biology, Evolution

Tiny subterranean cracks can upend aquifer microbes’ ecology

Scientific American

Fossils Upend Conventional Wisdom about Evolution of Human Bipedalism

samedi 5 novembre 2022 par Jeremy DeSilva — Features, Biology, Evolution

For most of human evolution, multiple species with different ways of walking upright coexisted

Scientific American

Vertebrates May Have Used Vocal Communication More Than 100 Million Years Earlier Than We Thought

mardi 25 octobre 2022 par Rachel Nuwer — Biology, Evolution

Animals with a backbone may have first emitted something akin to bleeps, grunts, crackles, toots and snorts more than 400 million years ago

Scientific American

Penis Worm's Ancient Cousin Fossilized with Its Doughnut-Shaped Brain Intact

mercredi 5 octobre 2022 par Nicoletta Lanese, LiveScience — Biology, Evolution

The fossilized embryo of a Cambrian worm holds the preserved remains of a tiny brain

Scientific American

Discoveries about Ancient Human Evolution Win 2022 Nobel Prize in Physiology or Medicine

lundi 3 octobre 2022 par Tanya Lewis — Biology, Evolution, Genetics, Paleontology, Anthropology

Svante Pääbo’s work on sequencing the DNA of Neandertals and Denisovans, which won the 2022 Nobel Prize in Physiology or Medicine, revealed surprising interbreeding among human species

Scientific American