During the fall or late summer months, it is not uncommon to see an odd looking stick-like insect lying on the sunny side of a building, mailbox or windowsill. This insect is called a walking stick.

A team of biologists says it has found what is quite likely the first-ever documented case of "re-evolution," suggesting that nature does indeed offer second chances -- a species can evolve a new ...

Horned treehoppers have the horned helmets to help "the treehoppers avoid predation through camouflage or intimidation," according to Nature Journal. 2. How many legs does a monkey slug caterpillar ...