Last Updated: Thursday, October 03, 2013, 09:40
New images of the Red planet released by NASA suggest possible ancient supervolcanoes on Mars. The supervolcanoes are similar to the caldera that sits under Yellowstone National Park.
Last Updated: Thursday, May 31, 2012, 14:20
The largest volcanoes on Earth may take as little as a few hundred years to form and erupt, a new study has revealed.
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