oil spill

The Environmental Protection Agency estimates 588,000 gallons of oil were spilled over land and into Mill Creek.

The cause for the spill is still unclear. What's known is the type of oil that was piped: tar sands oil, also called diluted bitumen. It's a lot harder to clean up than conventional oil.

A ruptured pipeline northwest of Kansas City dumped about 588,000 gallons of oil into a creek running through rural pastureland, throwing operator TC Energy's federal permit into question.

In Louisiana, more than 30 alligators have received the scrubbing of a lifetime after an oil spill left them covered in diesel last December.

Investigators believe a 1,200-foot cargo ship dragging anchor in rough seas caught an underwater oil pipeline and pulled it across the seafloor, months before a leak from the line.

California Attorney General Rob Bonta says investigators will work to find the cause of the oil spill and whether anything could have been done to prevent the spill.

The torn underwater pipeline spilled tens of thousands of gallons of crude oil into the ocean, according to federal investigators.

Federal, state and local agencies are racing to determine the cause of the spill, which is at least 13 square miles in size.

Coast Guard teams have been dispatched to help determine the extent of the damage from the spill, which is situated roughly two miles off the Louisiana coast. Officials say the source remains unclear.

Imagery from the National Oceanic and Atmospheric Administration shows what appears to be a large oil slick near an offshore rig in the Gulf of Mexico.