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4:13
William Herschel gets the credit, but his sister Caroline was also a pioneer astronomer.
2:26
Bill Nye, TV's "Science Guy," conducts a pasta-making experiment that can save energy.
1:23
Tom and Ray test the waters of Iceland's Blue Lagoon while filming "Car of the Future."
0:55
Primatologist Brian Hare sees whether a bonobo can solve a puzzle to get a slice of apple.
1:43
A researcher tests the cognitive skills of a chimpanzee with a seemingly simple task.
2:42
Hotels are offering an innovative way for observant Jews to use elevators on the Sabbath.
4:05
See neuroscientist Oliver Sacks's brain respond differently to music by Bach & Beethoven.
1:07
Author and physicist Brian Greene answers questions from Facebook and Twitter.
5:09
China is ramping up production of solar technology but coal power remains king.
2:29
One World Trade Center's glass facade may look fragile, but it is extraordinarily tough.
2:20
Visitors to the newly opened 9/11 memorial share their impressions.
