Bioscience:What's in a Neem
Many trees and plants have developed hidden defenses， powerful molecules that affect the world around them in ways far beyond our science. These natural compounds are the focus of international research in the struggle to find safe， effective ways of controlling insects and disease. Tonight we'll watch as one of those trees starts to reveal its extraordinary powers the Indian neem tree.
- Added：2006
- Country：Britain
- Duration：60
- Time of update：2011/8/18 16:57:19