oil spills

The spill included 10 barrels of oil and 1,500 barrels of industrial salt water left over from oil and gas production. Officials say it's mostly cleaned up.

The Keystone was built with extra safety measures, yet it split open under run-of-the-mill pressure levels that less rigorously designed pipelines regularly withstand.

Trucks are hauling oil-drenched soil to a landfill near Omaha. Crews are building a five-acre pond to continue treating contaminated water.

The Keystone is Washington County's biggest source of property taxes for schools and other local government, but the company didn't pay for 10 years

Hundreds of workers have been hustling around the clock to recover the oil. Some landowners want more information about the cleanup and about why the pipeline broke.

Crews in north-central Kansas continue to remove oil from several miles of Mill Creek that are now blocked off from the rest of the creek. Contamination downstream is decreasing.

A Michigan scientist warns that dilbit can seem to disappear, only to turn up later. This mystery may have to do with how the oil binds to other particles in water.

The spill in Kansas is now the second-largest spill of tar sands crude on U.S. soil. And scientists say this stuff comes with major complications for containing and cleaning it.

The workers are on site in Washington County to survey and clean the Keystone pipeline oil spill that moved about three miles downstream in Mill Creek.

More than 20,000 tons spilled in a remote Arctic region, prompting Russian President Vladimir Putin to declare a state of emergency. The company says thawing permafrost may have caused the spill.