British biologist Sir David Attenborough will celebrate his 99th birthday two days after the publication of his latest book, ...

They also can remain submerged for over 20 minutes. PHOTOGRAPH BY Paul Nicklen, National Geographic Image Collection By mid-December, as the Antarctic summer approaches, the chicks have started to ...

asked the 78-year-old director of the University of Washington’s Center for Ecosystem Sentinels and a National Geographic Explorer. “They’re comical, they’re curious, they’re endearing.” ...