Bathing with the "Car Talk" Guys
Tom and Ray test out the waters of Iceland's Blue Lagoon while filming "Car of the Future."
Can the Chimp Get the Grape?
A researcher tests the cognitive skills of a chimpanzee with a seemingly simple task.
Can the Bonobo Get the Apple?
Primatologist Brian Hare sees whether a bonobo can solve a puzzle to get a slice of apple.
How Percy Julian Became a Great 20th Century Scientist
Black chemist Percy Julian met with every possible barrier in a deeply segregated America. Here's how he rose to the highest levels of scientific and personal achievement.
Einstein Thought Experiments
Watch visualizations of ideas that helped Einstein devise his theories of relativity and of the equivalence principle.
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