Clayton Morris and guests talk Popular Mechanics Breakthrough Awards & Windows Phone 7
Birth of 'liger' cubs causing concern among wildlife experts
Scientists report progress in creating stem cells
Ad campaign targets college hookup culture
Shark expert Andy Dehart takes you inside the action of 'Shark Week'
Single Asian carp found in Chicago-area fish kill
Sharks threatened by commercial and illegal fishing
Illinois governor, chief of staff arrested in corruption probe
Famed atheist Richard Dawkins joins Alan to discuss his new book supporting the theory of evolution
Dead whale towed ashore in Tampa, Florida
TV cameras capture great white sharks hunting at night for first time ever
Can dangerous animals be tamed by humans?
Seismologist says increased tremors along San Andreas Fault may indicate major earthquake risk
Nanotechnology is a revolutionary way of targeting cancer cells through the collaboration of engineering and biology that never existed until now
Abandoned snakes, other pets becoming a nuisance in California Lake
Alan engages famed atheist Richard Dawkins on the ultimate meaning of human existence.
Former Pennsylvania senator defends criticism of President Obama's stance on abortion
UC San Diego Genetics Professor James H. Fowler talks with Alan about his new study that suggests we may predisposed to certain political views
Panel picks apart what's really behind 'kumbaya moment' for state of the union address
Top atheist Sam Harris tells Alan why he believes faith is not necessary for morality