Yik Yak 'Handles' finally attach names to posts

Since it launched, Yik Yak has allowed users to anonymously post messages and pictures viewable by others within their local area. Popular among students, the service has been controversial and considered by some as a vehicle for cyberbullying, and...

Here's why the surface of Mercury is so dark

For years, scientists have wondered why Mercury is so dark. It doesn't have as much iron and titanium as the Moon, so it should be brighter. A team at Johns Hopkins' Applied Physics Laboratory finally has the answer, though. Thanks to a spectral...