There are not only ten quintillion 10000000000000000000 insects alive at any one time - they have been around for nearly 400 million years So step inside and get close to Earth's great survivors many of which live in armies and colonies. You'll find that if a bulldog ant is cut in two the head and the abdomen will fight each other the mantis looks exactly like a flower of a rotten leaf there are more species of beetle than of any other animal group on Earth and much more.