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00:30:11
Exploratorium biologist Karen Kalumuck will examine how increasing temperatures affect specific organisms at the poles—from phytoplankton to polar bears!

00:24:38
Join Exploratorium biologist Karen Kalumuck as she experiments with enzymes and proteins and shows at what temperatures they function best.

00:29:33
Join Exploratorium biologist Karen Kalumuck as she investigates the characteristics of living organisms and ecosystems, and how climate change affects them.

00:28:45
South Pole scientists Tom Crawford and Jeff McMahon take us on a virtual tour of the South Pole Station, then discuss working in the polar environment.

00:25:43
Join Exploratorium physicists Paul Doherty and Stephanie Chasteen as they examine the past, present, and future of climate change. Watch as Paul and Stephanie demonstrate how you can look at a slice of climate from the past, what a sediment core might look like, and the secrets hidden in an ice balloon!

00:27:47
Exploratorium biologist Charles Carlson talks about why climate change is causing a crisis with the Gulf Stream.

00:09:55
More quick answers to the most frequently asked questions about global warming.

00:31:41
Watch as Exploratorium physicists Paul Doherty and Stephanie Chasteen play around with the leading greenhouse gas: carbon dioxide. What is it? How much is there in our atmosphere? What does it do that is so harmful to the environment?

00:24:36
Join Exploratorium staff Paul Doherty and Robyn Higdon as they discuss the Transit of Mercury.

05:12:09
On November 8, 2006, Mercury slowly slid across the face of the sun during a relatively rare event known as a transit. The Exploratorium's Live@ crew was at the Kitt Peak National Observatory in Arizona to cover the event. This webcast includes a brief history of Kitt Peak and its 21 telescopes.