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00:00:25
An introduction to the Ice Balloons activity, in which learners explore globes of frozen water and learn how to ask and then answer 'investigable' questions.

00:07:39
A detailed demonstration of how to do the Ice Balloons activity, including a discussion of materials needed and strategies for getting learners to ask and then investigate questions about what they are seeing.

00:01:03
The science and pedagogy behind this activity, including a discussion of concepts such as density, temperature, thermal conductivity, center of mass, freezing point depression, heat capacity, and the characteristics of the states of water, water vapor, and ice. Also describes strategies for observing, asking questions, and then choosing a question to investigate further.

00:05:15
Geologist Chistina Riesselman explains how studying 3-million-year-old sediment from Antarctica is providing a glimpse of what our planet's climate might look like if atmospheric carbon dioxide continues to rise as projected.

00:00:36
In May 2009, the ROV Jason captured these images of violent explosions of the West Mata volcano near Fiji. At almost 4,000 feet underwater, this is the deepest erupting volcano ever witnessed and captured on video. It's also the first time anyone has ever observed the formation of deep-ocean seafloor as it's happening.

00:46:44
We speak with biologist David Ainley, who has been studying Adelie penguins in Antarctica for more than 25 years

00:13:34
In this webcast from Antarctica, we meet up with Ted Scambos, a glaciologist from the University of Colorado and the National Snow and Ice Data Center.

00:01:08
Adelie penguins contemplate the water near a photographer at a crack in the ice.

00:31:28
Hear from marine biologist Dr. Stacy Kim, who uses a small camera-equipped remotely operated vehicle (ROV) to investigate the bottom-dwelling creatures under the sea ice.

00:00:37
Adélie penguins walking across ice on the Ross Sea, Antarctica.