The estimate of 5.5 million species of insects is interesting. What’s even more remarkable is that because scientists have found only about 1 million species, that means more than 4.5 million species ...

In the heart of Brazil, an ancient network of termite mounds stretches across an area so vast it can be seen from space.

The venomous centipede crawled into the Movile Cave millions of years ago and adapted to live in the pitch black, surrounded by deadly gases.

What is the immune system? The immune system works to keep germs and other foreign substances out of the body and destroy any that get in. It's made up of a complicated network of cells and organs. It ...