Royal Dutch Shell plc (Shell) is an independent oil and gas company. The Company explores for crude oil and natural gas across the world, both in conventional fields and from sources, such as tight rock, shale and coal formations. The Company is engaged in the principal aspects of the oil and gas industry in approximately 70 countries. The Company operates in three segments: Upstream, Downstream and Corporate. The Company's Upstream segment focuses on exploration for new crude oil and natural gas reserves and on developing new projects. Its Downstream segment focuses on turning crude oil into a range of refined products, which are moved and marketed around the world for domestic, industrial and transport use. The Company sells various products, which include gasoline, diesel, heating oil, aviation fuel, marine fuel, liquefied natural gas (LNG) for transport, lubricants, bitumen and sulfur. It also produces and sells ethanol from sugar cane in Brazil.