Evolution sounds like a straight climb toward better survival, but fossil records and genetic research show species sometimes ...

Scientists from the California Academy of Sciences described 72 new species last year, from elegant birds to strange sea slugs.

This mammal, about the size of an opossum, had a mix of strange characteristics that haven't been seen together before. It highlights evolutionary strangeness that can arise when evolution occurs in ...

Scientists discover 90 new species in Chinese fossils revealing how deep-ocean refuges preserved life after mass extinction ...

Researchers have uncovered the fossil of an early mammal named the "crazy beast" that lived 66 million years ago alongside dinosaurs and giant crocodiles on Madagascar, and it's unlike any mammal ever ...