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Public: Keepers of the Biosphere on PBS Intimate Strangers



INTIMATE STRANGERS: UNSEEN LIFE ON EARTH

"Keepers of the Biosphere"

Tuesday, November 16, 1999 (8-9:00 pm)

This series explores the mysterious, silent, invisible world of
microbes -- the first life forms on Earth -- responsible for the
production of most of Earth's oxygen. The second episode follows
scientists who are exploring our reliance on microbes as they tend to
the recycling that keeps the world habitable. (CC, Stereo, WWW)

http://www.pbs.org/opb/intimatestrangers/biosphere/index.html