US scientists reported that nearly 75% of the oil spilled from the BP spill in the Gulf of Mexico has been removed, with 26% remaining as a sheen or tarballs, buried in sediment or washed ashore. The report "BP Deepwater Horizon Oil Budget: What Happened to the Oil?" stated that burning, skimming, and direct recovery from the wellhead removed 25% of the oil released. Another 25% naturally evaporated or dissolved, while 24% was dispersed into small droplets. The remaining oil is either on or just beneath the water's surface, washed ashore, or buried in sand and sediments at the sea bottom. The Unified Command, consisting of government and private efforts, has dealt with 33% of the spilled oil. The report discovered that 17 percent of the oil was collected directly from the wellhead, while 5 percent was burned, 3 percent was skimmed, and 8 percent was dispersed using chemicals. The remaining 74 percent was eliminated through natural processes. Carol Browner, an adviser on energy and climate change to President Obama, expressed optimism on ABC's "Good Morning America" show, stating that most of the oil seems to have disappeared according to initial assessments by scientists. She also described this as a significant turning point.