Another reason to eat your fruits and vegetables: Recent research shows that small doses of the toxins naturally found in plants can boost our immune systems, protect against brain disease and help us live longer. We look at the toxins in plants and other anti-aging insights.
Deep in the heart of an uncharted rainforest in Northern California lives the tallest tree on the planet. Author Richard Preston tells the story of the majestic Sequoia sempervirens and the daring group of botanists and amateur naturalist who scaled the tallest trees and discovered a new ecosystem.
- Richard Preston a writer for "The New Yorker," and author of "The Hot Zone," "The Demon in the Freezer," and the novel "The Cobra Event."
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