Nuclear submarine nuclear-powered submarine was first proposed in the United States Navy by the Naval Research Laboratory's Ross Gunn in 1939. Construction of the world's first nuclear powered submarine was made possible by the successful development of a nuclear propulsion plant by a group of scientists and engineers at the Naval Reactors Branch of the Bureau of Ships and the Atomic Energy Commission. In July 1951 the U.S. Congress authorized construction of the first nuclear-powered submarine, "Nautilus", under the leadership of Captain Hyman G. Rickover, USN (sharing names with Captain Nemo's fictional submarine in Jules Verne's "Twenty Thousand Leagues Under the Sea",
Lake North Pole Lake North Pole Lake North Pole, also known as The North Pool, is a small, shallow lake near the North Pole, and is currently the northernmost lake in the world. It came into existence in 2002, occurring each year, then freezing over in the winter. The lake, which is approximately one foot deep, is composed almost entirely of fresh water melted from the ice beneath. A web camera is stationed beside the lake to monitor changes. It was built by the Polar Science Center. On July 26, 2013, the depth was estimated to be approximately 40 cm. Members of the