Video: Night-shining clouds in motion

Noctilucent or night-shining clouds can look like a stormy sea, with wave after wave rolling in.

Winners of International Earth & Sky Photo Contest!

This year's winners were selected from images taken in 55 countries during 2013 and 2014.

Is Mauna Loa volcano beginning to stir?

Over the past 13 months, the Volcano Observatory in Hawaii has recorded increased activity on the flanks and summit of Mauna Loa, the largest volcano on Earth.

Wonderful video of 30 dolphins surfing

See a pod of dolphins in south Western Australia simultaneously catch a wave.

Lifeform of the Week: Eels, cuter than you think?

Let go of your aversion to slimy animals and embrace the eel appeal.

Preliminary data show May 2014 as warmest May on record

It now seems possible that 2014 could become the hottest year on record, if the trend from the first five months continues.

Monster twin tornadoes strike Pilger, Nebraska

Amazing footage and video of two tornadoes striking near Pilger, Nebraska on Monday, June 16, 2014.

Scientists believe a hidden “ocean” lies deep within Earth

They believe there might be three times as much water deep underground as exists in all the world's surface oceans.

Chimps outwit humans in games of strategy

In contests drawn from game theory, chimpanzee pairs consistently outperform humans in games that test memory and strategic thinking.

View from space: New York City

Astronaut's view of New York, New York.