After 17 years quietly developing under the soil, 3 species of periodical cicadas emerged this summer. How do these insects coordinate?

There’s no doubt that national parks are good at getting people in touch with the natural world. But how good are they at conserving wildlife?

Smalltooth sawfish are increasingly reproducing without males, according to new research.

Charles R. Brown and Mary Bomberger Brown have been studying cliff swallows (Petrochelidon pyrrhonota) in southwestern Nebraska since the early 1980s.