Leeches/The Search for ET/Stem Cells Breakthrough/Profile: Edith Widder
- Episode aired Jul 23, 2008
![Rodney Brooks, Robert Krulwich, Jacob Ward, Neil deGrasse Tyson, Sherry Turkle, Carla Wohl, Ziya Tong, Kristi Curry Rogers, David Pogue, Raymond Rogers, Mary Schweitzer, Peter Standring, Manel Esteller, Derek Briggs, Brian Hare, Jacob Ward, David Spergel, Jim Gillogly, Chad Cohen, James Sanborn, Jennifer Wittmeyer, Ed Scheidt, Elonka Dunin, Said Musa, Arlie Petters, Bernice Waight, Jean-Pierre Issa, and Randy Jirtle in Nova ScienceNow (2005)](https://m.media-amazon.com/images/M/MV5BZmNjZTZiYjAtNGZiZC00ZmVjLTg3NjEtM2UxMzUzZGI0NGQ3XkEyXkFqcGdeQXVyODg3NDc1OTE@._V1_QL75_UX190_CR0,2,190,281_.jpg)
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 sig... Read allLeeches - 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... Read allLeeches - 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. ... Read all