What exactly is a working dog, and how can you tell if someone's service dog is fake?
Gas cloud big enough to make 2 million suns is boomeranging around our galaxy, says NASA
February 8, 2016, 12:55 p.m. by Michael Graham Richard
The 11,000 light-years long hydrogen cloud is moving at 700,000 miles per hour towards the Milky Way.
Only known wild jaguar in the U.S. caught on camera in Arizona
February 8, 2016, 12:19 p.m. by Jaymi Heimbuch
Jaguars used to roam all over the Southwest but now are an extreme rarity. And this unique cat is already threatened by the mining industry.
In honor of Chinese New Year, here are 540 dancing robots!
February 8, 2016, 9:38 a.m. by Lloyd Alter
Here's an idea for next year's Super Bowl halftime show.