Sarnia vs Perm

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Sarnia is a city in Southwestern Ontario, Canada, with a 2016 population of 71,594. It is the largest city on Lake Huron and in Lambton County. Sarnia is located on the eastern bank of the junction between the Upper and Lower Great Lakes where Lake Huron flows into the St. Clair River, which forms the Canada–United States border, directly across from Port Huron, Michigan. The site's natural harbour first attracted the French explorer La Salle. He named the site "The Rapids" on 23 August 1679, when he had horses and men pull his 45-ton barque Le Griffon north against the nearly four-knot current of the St. Clair River.This was the first time that a vessel other than a canoe or other oar-powered vessel had sailed into Lake Huron, and La Salle's voyage was germinal in the development of commercial shipping on the Great Lakes. Located in the natural harbour, the Sarnia port remains an important centre for lake freighters and oceangoing ships carrying cargoes of grain and petroleum products. The natural port and the salt caverns that exist in the surrounding areas, together with the oil discovered in nearby Oil Springs in 1858, led to the dramatic growth of the petroleum industry in this area.

Because Oil Springs was the first place in Canada and North America to drill commercially for oil, the knowledge that was acquired there resulted in oil drillers from Sarnia travelling the world teaching other enterprises and nations how to drill for oil.The complex of refining and chemical companies is called Chemical Valley and located south of downtown Sarnia. In 2011 the city had the highest level of particulates air pollution of any Canadian city, but it has since dropped to rank 30th in this hazard. About 60 percent of the particulate matter comes from industries and polluters in the neighbouring United States.Lake Huron is cooler than the air in summer and warmer than the air in winter; therefore, it moderates Sarnia's humid continental climate, making temperature extremes of hot and cold less evident. In the winter, Sarnia occasionally experiences lake-effect snow from Arctic air blowing across the warmer waters of Lake Huron and condensing to form snow squalls over land.

Source: Wikipedia

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Perm (Russian: Пермь, IPA: [pʲɛrmʲ]), previously known as Yagoshikha (Ягошиха) (1723–1781), and Molotov (Мо́лотов) (1940–1957), is the largest city and the administrative centre of Perm Krai, Russia. The city is located on the banks of the Kama River, near the Ural Mountains, covering an area of 799.68 square kilometres (308.76 square miles), with a population of over 1 million residents. Perm is the fourteenth-largest city in Russia, and the fifth-largest city in the Volga Federal District. In 1723, a copper-smelting works was founded at the village of Yagoshikha. In 1781 the settlement of Yagoshikha became the town of Perm. Perm's position on the navigable Kama River, leading to the Volga, and on the Siberian Route, across the Ural Mountains helped it become an important trade and manufacturing centre. It also lay along the Trans-Siberian Railway.

Perm grew considerably as industrialization proceeded in the Urals during the Soviet period, and was named Molotov in honour of Vyacheslav Molotov. After the dissolution of the Soviet Union, the city returned to its historical name, and became the administrative centre of Perm Krai. Modern Perm is still a major railway hub and one of the chief industrial centres of the Urals region. The city's diversified metallurgical and engineering industries produce equipment and machine tools for the petroleum and coal industries, as well as agricultural machinery. A major petroleum refinery uses oil transported by pipeline from the West Siberian oilfields, and the city’s large chemical industry makes fertilizers and dyes. The city’s institutions of higher education include the Perm A.M. Gorky State University, founded in 1916.

Source: Wikipedia