A huge plume of molten rock that is linked to volcanic eruptions has been detected below southern Africa.
Canyon formation: A single catastrophic flood capable of cutting into bedrock is extremely rare, but some gushers could form canyons very quickly.
Afghan mineral deposits were found by the U.S. Geological Survey.
A team of scientists is climbing Indonesia's tropical glacier, Puncak Jaya, to dig out ice cores and study them for past patterns of climate change. They will also study samples from China, Peru, and Kenya.
Natural steam vents turn a what would otherwise be a bleak subarctic island into a land of bananas. Too many bananas, in fact.
NEW ZEALAND: New Zealand is the most peaceful country in the world, according to the 2010 Global Peace Index (GPI), the fourth edition of an annual attempt to quantify peace in countries across the world. New Zealand topped 149 other countries on the list, based on 23 factors including military expenditures, participation in United Nations peacekeeping, and domestic stability. Here, a Zorb rolls down a slip in Rotorua, New Zealand, in May 2009. Zorbing is where visitors can tumble down a hillside in what looks like a giant beach ball.
As scientists debate whether or not the giant Guatemala sinkhole actually fits the definition of a sinkhole, they agree on one thing: Guatemala City's geology makes it prone to huge sinkholes.
An employee poses inside Antony Gormley's sculpture, 'Breathing Room III,' which is made from 15 interconnecting photo-luminescent frames, at the White Cube Gallery in London on Thursday.
There is, however, no firm evidence that Mars has ever hosted life.
According to the old model of how volcanoes grow, the volcanoes of the Mediterranean shouldn't exist. A new model could explain how they got there.