Steve Jacobs uses his desktop tornado demo to describe conservation of angular momentum.
(00:49)Lynn Rothschild takes us on a field trip to the Oakland Zoo to discuss the diversity of life on o...
(06:44)Animated Images from the Known Universe
Ever wondered what would happen if you were sucked into a black hole? Or, if wormholes could make time travel a reality? And could life on Earth survive a huge meteor strike like the one that took out the dinosaurs?
Now you can find out in this captivating series. Join experts as they unravel the most mind-boggling mysteries of the cosmos, using the latest scientific theories, dramatic time sequences and everyday examples of incredible forces.