Sarnia vs Krakow

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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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Kraków (, also US: , UK: , Polish: [ˈkrakuf] (listen)), written in English as Krakow and traditionally known as Cracow, is the second-largest and one of the oldest cities in Poland. Situated on the Vistula River in Lesser Poland Province, the city dates back to the 7th century. Kraków was the official capital of Poland until 1596 and has traditionally been one of the leading centres of Polish academic, economic, cultural and artistic life. Cited as one of Europe's most beautiful cities, its Old Town was declared the first UNESCO World Heritage Site in the world. The city has grown from a Stone Age settlement to Poland's second-most-important city. It began as a hamlet on Wawel Hill and was reported as a busy trading centre of Central Europe in 965. With the establishment of new universities and cultural venues at the emergence of the Second Polish Republic in 1918 and throughout the 20th century, Kraków reaffirmed its role as a major national academic and artistic centre. The city has a population of about 780,000, with approximately 8 million additional people living within a 100 km (62 mi) radius of its main square.After the invasion of Poland by Nazi Germany at the start of World War II, the newly defined Distrikt Krakau (Kraków District) became the capital of Germany's General Government. The Jewish population of the city was forced into a walled zone known as the Kraków Ghetto, from which they were sent to German extermination camps such as the nearby Auschwitz, and the Nazi concentration camps like Płaszów.

However, the city was spared from destruction and major bombing. In 1978, Karol Wojtyła, archbishop of Kraków, was elevated to the papacy as Pope John Paul II—the first non-Italian pope in 455 years. Also that year, UNESCO approved Kraków's entire Old Town and historic centre as its first World Heritage List alongside Quito. Kraków is classified as a global city with the ranking of "high sufficiency" by the Globalization and World Cities Research Network. Its extensive cultural heritage across the epochs of Gothic, Renaissance and Baroque architecture includes the Wawel Cathedral and the Royal Castle on the banks of the Vistula, the St. Mary's Basilica, Saints Peter and Paul Church and the largest medieval market square in Europe, the Rynek Główny. Kraków is home to Jagiellonian University, one of the oldest universities in the world and traditionally Poland's most reputable institution of higher learning. In 2000, Kraków was named European Capital of Culture. In 2013, Kraków was officially approved as a UNESCO City of Literature. The city hosted the World Youth Day in July 2016.

Source: Wikipedia