Leeds vs Salt

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Leeds is the largest city in the county of West Yorkshire in Northern England, approximately 170 miles (270 km) north of central London. Leeds is the cultural, financial and commercial heart of the West Yorkshire Built-up Area (2011 census classification), the UK's fourth-most populous urban area with a reported population of 1.8 million in 2013.The city is served by five universities, has the UK's fourth-largest student population and the country's fourth-largest urban economy.It has one of the most diverse economies of all the UK's main employment centres and has seen the fastest rate of private-sector jobs growth of any UK city. It also has the highest ratio of private to public sector jobs of all the UK's Core Cities, with 77% of its workforce working in the private sector. Leeds has the third-largest jobs total by local authority area, with 480,000 in employment and self-employment at the beginning of 2015. Leeds is ranked as a "High Sufficiency" level city by the Globalization and World Cities Research Network.Leeds was a small manorial borough in the 13th century, becoming a major centre for the production and trading of wool in the 17th and 18th centuries, then a major mill town during the Industrial Revolution; wool was still the dominant industry, but flax, engineering, iron foundries, printing, and other industries were also important. From being a market town in the valley of the River Aire in the 16th century, Leeds expanded and absorbed the surrounding villages to become a populous urban centre by the mid-20th century.

Today, Leeds has become the largest legal and financial centre outside London with the financial and insurance services industry worth £13 billion to the city's economy. The finance and business service sector account for 38% of total output with more than 30 national and international banks located in the city, including an office of the Bank of England. Leeds is also the UK's third-largest manufacturing centre with around 1,800 firms and 39,000 employees; Leeds manufacturing firms account for 8.8% of total employment in the city and is worth over £7 billion to the local economy. The largest sub-sectors are engineering, printing and publishing, food and drink, chemicals and medical technology. Other key sectors include retail, leisure and the visitor economy, construction, and the creative and digital industries. The city saw several firsts, including the oldest-surviving film in existence, Roundhay Garden Scene (1888), and the 1767 invention of soda water.Public transport, rail and road communications networks in the region are focused on Leeds; the second phase of High Speed 2 will connect it to London via East Midlands Hub and Sheffield. Leeds currently has the third busiest railway station and the tenth busiest airport outside London. Leeds has a less extensive public transport coverage than other UK cities of comparable size, and is the largest city in Europe without any form of light rail or underground system.

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