The rainforests of the world are a tremendous resource for many of the world's people, and scientists believe that there are many species of plants and animals in the rainforest that haven't even been discovered yet! Rainforests are disappearing at the rate of 3,800 acres a day, largely because some of the things that come from the rainforest aren't sustainably harvested. Human and animal generations will not be able to benefit from the rainforest's future resources if this continues.