Dr. Peter Kershaw studies climate change in Churchill, Manitoba, Canada, "Polar Bear Capital of the World". Earthwatch sends teams of volunteers in the summer and in winter, to help him take temperature and other measurements and core samples of the snow.
The Arctic tundra is a huge carbon sink, and as the tundra warms, this carbon is starting to be released. The years of data he's collected are helping to answer some critical questions about global warming.
In this photo, volunteers on a February team bundle up to take a core sample. Volunteers also get to build igloos and even sleep in them if they're brave enough.
posted by Earthwatch
The Arctic tundra is a huge carbon sink, and as the tundra warms, this carbon is starting to be released. The years of data he's collected are helping to answer some critical questions about global warming.
In this photo, volunteers on a February team bundle up to take a core sample. Volunteers also get to build igloos and even sleep in them if they're brave enough.
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