A great review of these interesting insects, many of which are on a 13 or 17 year cycle of life. Great pictures and information.

This is a very interesting site that provides evidence that the Exodus of the Israelites really did happen.

A list of common trees in Pennsylvania, as well as specific information on each tree.

Every 13 or 17 years, billions of cicadas emerge from the ground to molt, mate and die. Rose Eveleth explains everything you need to know about these noisy insects, admitting that there's still some things we just don't understand. [2:45]