NOVA scienceNOW

Season 3 Episode 5: 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.

Genre:

Documentary, News

Seasons:

6

Episodes:

40

Cast:

David Pogue, Ziya Tong, Peter Standring

Quality:

HD

Duration:

55 min

First Air:

2005

Rating:

8.0