Human beings have inhabited the banks of the Amazon River since 13,000 BC and yet they make up just a small percentage of the "population" of this geographic wonderland. The Amazon River basin teems with life--animal and plant alike. It's a rainforest that is home to an estimated 390 billion individual trees, 2.5 million species of insects, and hundreds of amazing creatures and plants that can either cure diseases, or, like the poison dart frog, kill with a...