President Donald Trump’s sweeping changes at the National Park Service have destabilized the agency and its core missions, critics say.

Earth’s vertebrate diversity may be far richer than anyone realized. A sweeping analysis of more than 300 studies suggests that for every known fish, bird, reptile, amphibian, or mammal species, there ...

When a new species is discovered, it's tempting to imagine an adventure novel, said Chan Kin Onn of Michigan State University. "Most people have this image of an intrepid explorer braving an isolated ...

A fourth Sun-like star loops around this tightly packed inner nexus roughly once every 1,000 days. The whole collection would ...