Asteroid - Will a doomsday rock the size of the Rose Bowl hit Earth in 2036?
Island of Stability - Follow the decades-long quest to create the elusive element 114.
Obesity - Examine the biology behind the compulsion to eat.
Profile: Karl Iagnemma - An innovative MIT roboticist is also an acclaimed fiction writer.
click here to see where to watch or .
Ready to Watch Nova ScienceNow, Season 3, Episode 9?