The Tor Project is merging operations with Tails, a portable Linux-based operating system focused on preserving user privacy and anonymity. Tails will be incorporated “into the Tor Project’s ...

On a base level, it's normal for dogs to chase their tails, explains Alt. Need a break? Play the USA TODAY Daily Crossword Puzzle. Tail-chasing that occurs every once in a while and a dog can be ...

It turns out that, like the antennas on an insect or crustacean, a ray uses its tail to sense its environment. The inside of a myliobatid stingray tail is remarkably complex, the scientists ...

Why mantas and related rays have such long tails has long been a mystery. The fish do not use their tails to propel through the water or to lash out at potential predators. And although stingray ...