New modeling of the Pluto-Charon system give good reasons to suspect that the surface of Pluto will be riddled with faults caused in part from a liquid ocean that once lie hidden under the icy surface.
New work shows how the highest mountain range in the world is not so much a tectonic train wreck as a shuffled pile of crumbly crustal dominoes.
Some of Mars' lava fields may actually be massive mud flows, indicating that they weren't created by ancient volcanic activity at all.
The latest U.N. report shows climate change is here -- and its effects will grow. So why haven't we done more?
A clever combination of Viking sunstones and a specialized sundial might have enabled Vikings to navigate after sunset.
The fatal collapse of a hillside in Washington State was a landslide, a slump and a mudflow. It was also not particularly unexpected.
An obsolete theory of the Earth works better than ever on Mercury, where new data reveals how much the hot little planet has shriveled since it first formed.
Natural gas can cook your dinner, blast the roof off your house, and so much more.
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