Scientists are revealing more about how the distinctive, facelike markings found on certain insect wings may boost survival.

From a pink dolphin slinking through the Amazon's waters to the sight of monarch butterflies filling the skies of Mexico, this year's best photos will take you on a journey across the planet.

Before National Geographic published its famous August 1976 cover story detailing the search for the monarch butterfly’s wintering grounds, nobody knew where these strikingly beautiful creatures ...