During the Cold War, the U.S. built a nuclear-powered underground military facility under the ice. Archival video shows us how it was pulled off—and why it could never last.

With piercing yellow eyes and cryptic plumage, this ground-dwelling bird is a master of camouflage in open habitats worldwide. The Eurasian Stone-curlew is a medium-sized wader with a distinctive ...

The bird has bright orange-yellow legs and a yellow bill. Both sexes look similar, with no significant seasonal plumage changes. Juveniles have a duller overall appearance, with a brownish head ...