Dandelion and maple tree seeds are blown and thrown to show two methods of seed dispersal. The narrator videotapes from his vantage point, his hands visible, but never his face. He examines helicopter blades as a human imitation of...

Plants evolved more than 400 million years ago into two types — vascular and nonvascular. Here's a video that explains the difference between vascular and nonvascular plants and then focuses on the over 24,000 types of nonvascular...

Watching plants grow is like watching paint dry: It happens so slowly that the changes are imperceptible from one moment to the next -- and yet the end results are dramatic. This video segment shows just how amazing plant development can...