A sun dog (or sundog) or mock sun, formally called a parhelion (plural parhelia) in meteorology, is an atmospheric optical phenomenon that consists of a bright spot to one or both sides of the Sun. Two sun dogs often flank the Sun within a 22° halo. The sun dog is a member of the family of halos, caused by the refraction of sunlight by ice crystals in the atmosphere. Sun dogs typically appear as a pair of subtly colored patches of light, around 22° to the left and right of the Sun, and at the same altitude above the horizon as the Sun. They can be seen anywhere in the world during any season, but...

Nefteyugansk (Russian: Нефтеюга́нск) is a city in Khanty-Mansi Autonomous Okrug, Russia, located south of the Ob River, close to the larger city of Surgut. Population: 122,855 (2010 Census); 107,830 (2002 Census); 93,930 (1989 Census). == History == It was founded on October 16, 1967, after an oil field had been discovered on a small forest clearing in the middle of the taiga marshland in 1961. The main and the only big enterprise in the city, Yuganskneftegaz, was founded in February 1966. The name 'Yugansk' comes from the indigenous Khanty name of a small river near the city, neft' means oil in...

The Langdale axe industry is the name given by archaeologists to specialised stone tool manufacturing centred at Great Langdale in England's Lake District during the Neolithic period (beginning about 4000 BC in Britain). The existence of a production site was originally suggested by chance discoveries in the 1930s, which were followed by more systematic searching in the 1940s and 1950s by Clare Fell and others. The finds were mainly reject axes, rough-outs and blades created by knapping large lumps of the rock found in the scree or perhaps by simple quarrying or opencast mining. Hammerstones have...