This story appears in the April 2011 issue of National Geographic magazine. When? This is the question that has brought two of the world's leading volcano scientists to the center of Africa; it's ...

For the best experience, please enable JavaScript in your browser settings. Flowing lava from the volcanic eruption of Mount Nyiragongo, which occurred late on May 22 ...

Some of the world's most spectacular but least-known volcanoes lie along the East African Rift, a wide crack in the Earth's crust that runs for more than 1,200 miles from Malawi through Tanzania ...