Leeches; SETI; Stem Cells; Edith Widder

July 23, 2008
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NOVA scienceNOW - S3 - E5

Leeches; SETI; Stem Cells; Edith Widder

Leeches - A century after falling out of favor, medicinal leeches are back in hospitals, sucking away on patients' wounds. SETI - Astronomers have their radio telescopes tuned to receive signals from alien worlds. But is anybody out there? Stem Cells Breakthrough - Three separate teams overcome a biomedical hurdle—creating stem cells without the use of human embryos. Profile: Edith Widder - Meet a marine biologist and explorer who has engineered new ways to spy on deep-sea creatures.

NOVA scienceNOW: Season 3 - 10 Episode s