Yellow snot is a sign of a cold, as it shows white blood cells are rushing to the site of the infection. Green mucus shows the immune system is fighting back as it turns that colour due to dead white blood cells.If mucus is pink or red it means the nasal tissue has become broken and is bleeding. Most people produce about 1.7 litres of mucus a day-enough to fill a kettle. 2  As it is made from water, proteins, antibodies and salts, it should be clear. 3  White snot is a sign of congestion, while yellow snot is signals a cold. 4  Green shows the immune system is working while red snot contains blood.
Smithâs The Wealth of Nations was the first great treatise on economics and founded the discipline. Smithâs goal was to promote economic growth in order to generate a high-wage economy that would redound to the benefit of the majority.
The writings of the Enlightenment influenced the leaders of the American and French Revolutions. For example, Thomas Jefferson wrote that all citizens have a right to 'life liberty and the pursuit of happiness' in the Declaration of Independence, based on the writings of John Locke.