Our Special Planet: A Cradle for Life [01:14:24]
@ Museum of Science (2002-10-23)
tags: astronomy geology [add tags]
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From the WGBH Forum Network: "Once life arises, it survives tenaciously. But how did the unique traits of our solar system help life to gain that initial foothold? How important is it to have a Jupiter to divert threatening swarms of comets, a large moon to provide nurturing tides, or a crust of moving plates to recycle the stuff of our world? Perhaps, despite the flood of newly discovered worlds, our planet is more precious than we ever realized."
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