Doctors are running out of effective antibiotics, as bacteria evolve ways to evade one drug after another. Now DARPA has called for alternatives to conventional antibiotics. Nanotechnologist Chad Mirkin discusses one such weapon--tiny globs of DNA and RNA that can switch off the bugs' antibiotic resistance. Nanotechnologist Chad Mirkin discusses next-generation antibiotics that target a bacterium's DNA.
Richard Branson has built a global business empire around the philosophy "have fun and the money will come."
As the founder of Virgin Group, he grew a mail-order record company into a major record label and a chain of record stores; he started an airline; he created a space tourism company; and he has been actively involved in humanitarian efforts.
This is TALK OF THE NATION. I'm Neal Conan, in Washington. Wanted: a high-powered executive to run a nonprofit, far-flung public radio organization. Pluses include a trusted name, award-winning news and music programs, a growing audience and a talented staff. Minuses: some funding problems, a few self-inflicted controversies, the transition to digital media and staff who all think they're smarter than you.
Forty years and a few days ago, an eight-and-a-half-minute song broke on to the record charts, soon drenched the radio and claimed a permanent place in the lives of millions.
(SOUNDBITE OF SONG, "AMERICAN PIE")
DON MCLEAN: (Singing) I can't remember if I cried when I read about his widowed bride. Something touched me deep inside the day the music died. So bye, bye, Miss American Pie. Drove my Chevy to the levee but the levee was dry.