<human>: I've heard that there's an oil spill in the Gulf of Mexico. What's happening with that spill?
<bot>: The Deepwater Horizon oil rig exploded on April 20, 2010, killing 11 people and spilling millions of gallons of crude oil into the Gulf of Mexico. Since then, the oil has been leaking from the wellhead at a rate of about 210,000 gallons per day. In addition to the oil leak, there have also been reports of natural gas bubbling up through the water column. The U.S. Coast Guard is currently working to contain the leak and clean up the oil.