Have you ever listened to a recording of birdsong? Or ocean waves? The howling of wolves, or thunder and rain? If you have, did you ever wonder whether nature was getting any compensation for ...

If a tree falls in a forest and no one is around to hear it, does it make a sound? The answer is a resounding yes—and we know this for certain because of the vast network of audio recorders that ...

Introduction to nature study --Why do leaves change their color --What are the parts of a tree --What is an insect -- What in a mammal --How do the fish swim --Songs of the rocks --The birds have a ...