Enigmatic 415 million-year-old fossils belong to a giant scorpion that may have reached lengths of around 3 feet (1 meter), a remarkable body size because most life on land at that time was small.

A new microraptor from Cretaceous China likely preyed on ancient birds.

Once widespread in Japan, the colorful birds went from being fairly commonplace in the country to being on the verge of extinction.

Fewer than 100 Rice’s whales remain on Earth. Researchers say sonic blasts from oil exploration are a top threat to the species. See and hear why.

Innovative systems to keep ships from hitting North Atlantic right whales are coming into use. The Trump administration is weighing whether they can replace a bedrock protection.

Innovative systems to keep ships from hitting North Atlantic right whales are coming into use. The Trump administration is weighing whether they can replace a bedrock protection.

© Sophie Park for The New York Times

The Sacramento Mountains checkerspot butterfly hasn’t been seen in the wild since 2022. The caterpillar was the last individual in human care.

© Diana Cervantes for The New York Times

The finding effectively paves the way for continued use of atrazine, a widely used herbicide that has been linked to birth defects and cancer in humans.

© Julie Ingwersen/Reuters