Animals are disappearing at hundreds of times the normal rate, primarily because of shrinking habitats. Their biggest threat: humans. No trace of the wild South China tiger, Panthera tigris ...

Ediacaran animals lived in the oceans 635-538 million ... include its curved shape and evidence of movement, as indicated by trace fossils. A comprehensive examination verified the specimen ...

The fossil was found at a cliff in Denmark. Fossilized vomit is called regurgitalite, and it's a type of trace fossil, which tells scientists about an organism's daily life.

LONDON--Scientists searching for the origins of COVID-19 have zeroed in on a short list of animals that possibly helped spread it to people, an effort they hope could allow them to trace the ...