On April 20, 2010, when BP’s deep-water drilling rig Deepwater Horizon exploded in the Gulf of Mexico, the oil giant claimed that the spill was just 1,000 barrels per day. A small non-profit in West Virginia, SkyTruth, studied the satellite observations of the oil slick, cataloged its computations, and concluded that the spill was at least 20 times bigger than what was being claimed. The report was swiftly picked up by the media, and lead the US government to straightaway increase the estimate to 5,000 barrels of oil per day.

Sourced through Scoop.it from: geoawesomeness.com