U.S. land managers are racing the clock as hotter, drier weather raises the risk of wildfires in the nation’s overgrown ...

A newly discovered genetic mechanism helped eliminate the tails of human ancestors. Skip to main content. Scientific American. February 28, 2024. 4 min read. How Humans Lost Their Tails.

Thresher sharks, which are rare and tend to keep to the open ocean, stun their prey by whipping them with their tails. Credit... Beara Creative/Alamy. By Kate Golembiewski. Jan. 24, 2024.

A genetic parasite may have robbed humans and other apes of their tails. Around 25 million years ago, this parasite, a small stretch of repetitive DNA called an Alu element, ended up in a gene ...