Video: Moonlight skating in Sweden

"Nights like these are almost to good to be true." See this touching, just-released video.

Audubon’s Christmas Bird Count starts December 14

Audubon Society’s Christmas Bird Count starts December 14 and runs through January 5. It’s free and anyone can participate, but you have to sign up in advance. Here's how.

Is El Nino here? Not quite yet, scientists say

Despite warm waters in the equatorial Pacific Ocean, the latest update from NOAA explains why El Nino has still not fully developed.

Incredible video of dense fog over Dallas

Video capture by a drone of dense fog with zero visibility on Tuesday, December 9, in Dallas, Texas. Amazing visuals!

Killing rats to save birds as glaciers recede

Glacier melt means rats can reach bird nests on South Georgia, an island north of Antarctica and east of the Falklands. What to do? Send in helicopters!

The yin-yang of sea ice at Earth’s poles

Arctic sea ice is decreasing. Antarctic sea ice is at an all-time high. How can that be? This 3-minute video offers an explanation.

2014 shaping up to be warmest year on record

The global average temperature over land and ocean surfaces for January to October 2014 was the highest on record, according to a NOAA report.

Glacier melt rate in West Antarctica tripled in last decade

A comprehensive, 21-year analysis reconciling four different techniques. A word about this year's sea ice extent. And why is info about Antarctica so hard to come by?

Relentless blitz of small space rocks erased much of Earth’s primordial atmosphere

The inevitable question arises: What replaced the atmosphere? It's possible the same impactors that ejected the atmosphere also introduced new gases.

Scientists identify mysterious killer of millions of sea stars

Densovirus is the likely culprit behind sea-star wasting disease, which has killed millions of sea stars along North America's west coast.

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