6th base found in eukaryotic DNA

A 6th nitrogenous base, once thought to exist only in bacteria, has been found in the DNA of eukaryotic cells.

Facebook for dolphins?

Dolphins, like humans, develop friendships, preferences for spending time with certain other dolphins, and extensive social networks.

We pay attention better on our feet

Students with standing desks are more attentive than those who sit at desks during class. Some schools have already made the switch.

Death toll rises in Nepal earthquake

We're devastated to hear of a 7.8-magnitude quake in Nepal that killed more than 4,400 people. The region is a hotbed of geological activity.