Anchor Lisa Mullins speaks with University of East Anglia professor Andrew Watson about his recent paper on the likelihood of finding intelligent life on another planet; his mathematical model says: not very likely.
The answer to today's Geo Quiz is Basel, Switzerland. The city was home to Swiss chemist Albert Hofmann, who died yesterday. The World's David Leveille reports that Hofmann's discovery of LSD remains controversial.
NASA's Phoenix lander has touched down on the surface of Mars as scientists around the world are watching; Anchor Lisa Mullins gets the latest from Ivan Semeniuk Ivan Semeniuk, US bureau chief for New Scientist magazine.