Watch Trailer
DISCLAIMER: Not all titles shown are currently available on all streaming providers.

Watch Nova ScienceNow Season 3 Episode 5 Online

  • 8.3/10
  • Subtitles: English

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.