Menu Close

Articles on Evolution

Displaying 261 - 280 of 988 articles

Medical technician Amira Doudou prepares samples at the University Hospital Institute for Infectious Diseases in Marseille, France, Jan. 13, 2021, to study the highly contagious COVID-19 variant. (AP Photo/Daniel Cole)

Why new COVID-19 variants are on the rise and spreading around the world

Multiple COVID-19 variants are circulating around the world and becoming more common. These mutations can alter the ability of the virus to take hold and replicate within our cells.
B117, the SARS CoV-2 variant that was first detected in the U.K., has been found to be 30%-80% more transmissible. Juan Gaertner/Science Photo Library via Getty Images

What you need to know about the new COVID-19 variants

A biologist who studies the evolution of diseases explains what’s different about the two new virus strains that have been found recently, and what that means for vaccine effectiveness.
North America during the late Pleistocene: a pack of dire wolves (red hair) are feeding bison while a pair of grey wolves approach in the hopes of scavenging. Mauricio Antón

Dire wolves went extinct 13,000 years ago but thanks to new genetic analysis their true story can now be told

Our research shows dire wolves lived in the tropics not the Arctic, and were not especially close relatives of the grey wolf.
Whether in the wild or in the lab, worms have an interesting story to tell. Sinhyu/iStock via Getty Images

Why do scientists care about worms?

‘Worm’ is really a catchall term for a huge variety of animals with different characteristics that span the tree of life. They hold clues about our own origins as well as hints about human health.

Top contributors

More