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01:53:32
The Exploratorium celebrates the 20th anniversary of Pi Day with a pie-throwing contest, Pi Day exhibits in Second Life, and more activities honoring everyone's favorite mathematical constant.

00:39:23
Join us for more conversation with David Ainley and other researchers studying Adelie penguins in Antarctica’s Ross Sea.

00:28:06
Join Exploratorium Senior Scientist Paul Doherty as he gives us an update on Mars and examines the possibility of an upcoming asteroid collision with the red planet!

00:29:28
Scientist working on the South Pole Telescope explain data collection, focusing on the telescope's receiver, a precise instrument with a thousand "eyes" pointed to the distant universe.

00:31:28
Hear more from scientists working on the Ice Cube telescope at the South Pole.

00:46:36
Meet glaciologist Slawek Tulaczyk and his team, who work in the fast-emerging field of ice sheet dynamics. They speak to us just after returning from a month at a remote camp on the West Antarctic Ice Sheet.

00:23:54
Watch as three giant helium balloons are launched above Antarctica to study climate history; listen as scientists talk about balloon research.

00:40:13
Scientists at Palmer Research Station in Antarctica talk about their research: How is the rich marine ecosystem just offshore responding to melting sea ice and global climate change?

00:30:04
Meet the scientists and engineers at work on the South Pole's Ice Cube Telescope. This telescope will be the largest in the world and is designed to capture the movement of neutrinos, the smallest of all subatomic particles.

00:31:32
Learn about the various projects and teams of people working on the South Pole Telescope.