Morning Overview on MSN
America’s largest supervolcano shows signs of waking up
Far beneath the forests and hot springs of the American West, the continent’s largest active volcanic system is rumbling in ...
Green Matters on MSN
An active geyser in Yellowstone National Park has gone quiet — and experts are not sure why
The tallest active geyser in the world sits in Yellowstone National Park 's Norris Geyser Basin. The geyser that once erupted ...
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