The "toxic extent" of the spill could have been up to 30 percent greater than what previous satellite data has suggested.
Scientists know more about Mars than the bottom of the Mariana Trench—the deepest part of Earth's ocean.
The 2016 planning papers related to BP's now-canceled project in the Great Australian Bight.
Dispersants caused lung irritation, nausea, vomiting, skin rashes and diarrhea.
The spill from the Delta House facility has leaked up to 9,350 barrels of oil.
The rig explosion in 2010 killed 11 workers and spewed millions of barrels of oil onto the shorelines of several states.
The risk of another oil spill in Alaska is too high for BP to resume exploration.
Russia spills seven times the amount leaked during the Deepwater Horizon disaster every year.
The discovery of damaged coral far from the spill's epicenter signals widespread damage.