Talk of the Nation

Experts discuss the future of electric cars, and whether bailout money with "green strings" attached might jolt Detroit into focusing on plug-in and hybrid cars. Find out about Tesla's slick plug-in sports car and a hybrid handcrafted for even more savings at the pump. ()  

Science Friday director Charles Bergquist stops in at the 15th World Congress on Intelligent Transport Systems for a look at new car technologies. Down the road, cars may be able to drive themselves ... but will they be able to parallel park? ()  

Bob Brier, mummy expert, Egyptologist and co-author of The Secret of the Great Pyramid, discusses theories about how the ancient Egyptians managed to build the Great Pyramid. New research suggests a ramp inside the pyramid may have been the key to its construction. ()  

Scientists found 5,600 different species or strains of bacteria living in human intestines, making gut bacteria 10 times more diverse than expected. David Relman, one of the authors of the study, explains the findings and how a common antibiotic disrupts this bacterial community. ()  

From the bottom of the sea to the bottom of the globe, scientists are looking for life in Earth's most extreme environments. A marine scientist on the R/V Atlantis and a microbiologist studying life in Antarctica recount their adventures, and what their research has in common. ()