Kgnu - How On Earth

Quantum Dot Antibiotics (starts 1:00) This programmable antibiotic might keep pace with quickly evolving superbugs.  Unlike most drugs - it's not derived from biological sources.  It's a tiny version of the semiconductors in everything from TVs to iphones to solar panels.  This "antibiotic" is made of nanoparticles, known as quantum dots.  CU Biofrontiers scientists Prashant Nagpal and Anushree Chatterjee explain their new invention. Shrinking Ozone Hole - (starts 15:24) The ozone hole is finally growing smaller - we’ll find out why and how long it will take to completely "heal" the ozone hole from Birgit Hassler, a researcher with the Cooperative Institute for Research in Environmental Sciences (CIRES), a partnership between the University of Colorado Boulder and the National Oceanic and Atmospheric Administration (NOAA). Hosts: Shelley Schlender, Susan Moran Producer:Shelley Schlender Engineer:Shelley Schlender Executive Producer: Susan Moran Listen to the show: