Popular Science Radio show

Summary: In this episode, The great Gulf of Mexico oil spill from space, Robot of the week, The Dishbot, See Popular Science on the Ipad, Do we need to be wary of extraterrestrials?, Batteries that run on salt water or urine, Treating PTSD with the party drug ecstasy, New helmet technology keeps brain injury to a minimum with a lubricated skin on the exterior, Kissing is gross! Molecule sized computers.