Lyon vs Salt

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Lyon or Lyons (UK: , US: , French: [ljɔ̃] (listen); Francoprovençal: Liyon, pronounced [ʎjɔ̃]; Italian: Lione, pronounced [liˈone]) is the third-largest city and second-largest urban area of France. It is located at the confluence of the rivers Rhône and Saône, about 470 km (292 mi) south-east of Paris, 320 km (199 mi) north of Marseille and 56 km (35 mi) northeast of Saint-Étienne. Inhabitants of the city are called Lyonnais. The city of Lyon proper had a population of 516,092 in 2017 within its small municipal territory of 48 km2 (19 sq mi), but together with its suburbs and exurbs the Lyon metropolitan area had a population of 2,323,221 that same year, the second-most populated in France. The city of Lyon and 58 suburban municipalities have formed since 2015 the Metropolis of Lyon, a directly elected metropolitan authority now in charge of most urban issues, with a population of 1,385,927 in 2017.Lyon is the capital of the region of Auvergne-Rhône-Alpes as well as the seat of the Rhône departmental council (whose jurisdiction, however, no longer extends over the Metropolis of Lyon since 2015). Former capital of the Gauls at the time of the Roman Empire, Lyon is the seat of an archbishopric whose holder bears the title of Primate of the Gauls.

Lyon became a major economic hub during the Renaissance. The city is recognized for its cuisine and gastronomy, and historical and architectural landmarks; as such, the districts of Old Lyon, the Fourvière hill, the Presqu'île and the slopes of the Croix-Rousse are inscribed on the UNESCO world heritage list. Lyon was historically an important area for the production and weaving of silk. Lyon played a significant role in the history of cinema: it is where Auguste and Louis Lumière invented the cinematograph. It is also known for its light festival, the Fête des Lumières, which begins every 8 December and lasts for four days, earning Lyon the title of Capital of Lights. Economically, Lyon is a major centre for banking, as well as for the chemical, pharmaceutical, and biotech industries. The city contains a significant software industry with a particular focus on video games, and in recent years has fostered a growing local start-up sector. Lyon hosts the international headquarters of Interpol, the International Agency for Research on Cancer and Euronews. According to the Globalization and World Rankings Research Institute, Lyon is considered a Beta city, as of 2018. It ranked second in France and 40th globally in Mercer's 2019 liveability rankings.

Source: Wikipedia

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Salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in its natural form as a crystalline mineral is known as rock salt or halite. Salt is present in vast quantities in seawater, where it is the main mineral constituent. The open ocean has about 35 grams (1.2 oz) of solids per liter of sea water, a salinity of 3.5%. Salt is essential for life in general, and saltiness is one of the basic human tastes. Salt is one of the oldest and most ubiquitous food seasonings, and salting is an important method of food preservation. Some of the earliest evidence of salt processing dates to around 6,000 BC, when people living in the area of present-day Romania boiled spring water to extract salts; a salt-works in China dates to approximately the same period. Salt was also prized by the ancient Hebrews, the Greeks, the Romans, the Byzantines, the Hittites, Egyptians, and the Indians. Salt became an important article of trade and was transported by boat across the Mediterranean Sea, along specially built salt roads, and across the Sahara on camel caravans. The scarcity and universal need for salt have led nations to go to war over it and use it to raise tax revenues. Salt is used in religious ceremonies and has other cultural and traditional significance.

Salt is processed from salt mines, and by the evaporation of seawater (sea salt) and mineral-rich spring water in shallow pools. Its major industrial products are caustic soda and chlorine; salt is used in many industrial processes including the manufacture of polyvinyl chloride, plastics, paper pulp and many other products. Of the annual global production of around two hundred million tonnes of salt, about 6% is used for human consumption. Other uses include water conditioning processes, de-icing highways, and agricultural use. Edible salt is sold in forms such as sea salt and table salt which usually contains an anti-caking agent and may be iodised to prevent iodine deficiency. As well as its use in cooking and at the table, salt is present in many processed foods. Sodium is an essential nutrient for human health via its role as an electrolyte and osmotic solute. Excessive salt consumption may increase the risk of cardiovascular diseases, such as hypertension, in children and adults. Such health effects of salt have long been studied. Accordingly, numerous world health associations and experts in developed countries recommend reducing consumption of popular salty foods. The World Health Organization recommends that adults should consume less than 2,000 mg of sodium, equivalent to 5 grams of salt per day.

Source: Wikipedia