Warming at the North Pole caused by the buildup of atmospheric greenhouse gases has reduced the ice that normally covers the Arctic Ocean at its lowest point in a few thousand years, a new study suggests.
Scientists say filling the giant Guatemala sinkhole isn't as simple as just dumping in gravel and dirt. First, geologists have to understand the conditions that caused it.
In the aftermath of Tropical Storm Agatha, a 330-foot-deep sinkhole opened up in the middle of Guatemala City. How do sinkholes form in the first place?
More than 178 people across Central America have been killed since Tropical Storm Agatha lashed the region with heavy rains on Saturday, leaving a giant Guatemala City sinkhole. How big is Guatemala's sinkhole?
Corporate behavior, drilling methods, regulators’ roles, and the search for oil alternatives all are reexamined in the wake of the BP oil spill in the Gulf of Mexico.
With Obama in Louisiana Friday to assess the response to the BP oil spill, residents have strong views about what needs to happen next. But their ideas can conflict, and expectations are low.
US Geological Survey estimates on the flow of oil from the wrecked wellhead are more than double what BP has been claiming, leading some to accuse BP of misrepresenting the flow of oil to minimize fines.
The Exxon Valdez disaster caused 11 million gallons of oil to leak into Prince William sound. BP's Gulf oil spill may have leaked 39 million gallons into the Gulf of Mexico.
Oil from the Exxon Valdez spill in Alaska in 1989 may take centuries to disappear, says Exxon. How long will the Gulf oil spill linger?
After BP's repeated failed attempts to cap the well at the center of the Gulf oil spill, the Obama administration is gradually becoming more involved. This week, it has sent two cabinet members to the scene and devoted more of its science resources to the relief effort.