Clip: The Bravery of Rachel Carson billmoyers.com

  "The most alarming of all man’s assaults upon the environment is the contamination of air, earth, rivers, and sea with dangerous and even lethal materials. This pollution is for the most part irrecoverable; the chain of evil it initiates not only in the world that must support life but in living tissues is for the most part irreversible. In this now universal contamination of the environment, chemicals are the sinister and little-recognized partners of radiation in changing the very nature of the world — the very nature of its life." -- From Rachel Carson's 1962 book Silent Spring

Biologist Rachel Carson didn't want to write the blockbuster Silent Spring but felt a responsibility to do so.  billmoyers.com