Claire Patterson is an American geochemist. Established the age of the Earth - 4.55 billion years (± 70 million years). To determine the age of our planet, Patterson used lead isotope counting. Developing new methods for determining the amount of lead in various materials, Patterson realized that with the development of civilization, the lead content in vegetation and people is steadily increasing.
He measured the lead content in the bones of modern humans and in the 1600-year-old skeleton. And in the bones of the modern man it turned out to be more than ... 700-1200 times. Lead poisoning - Saturnism causes psychotropic, neurotoxic and hemolytic effects. It leads to the defeat of all parts of the brain.
The main cause of infection was the use of lead additives to automotive fuels. This gasoline was named leaded - the word "ethyl" was chosen specifically so as not to scare people with the word "lead". The author of this invention, Thomas Midgley, was well aware of the dangers of lead poisoning. Almost immediately, workers in production began to appear unstable gait and mental disorders.So in 1924, at one poorly ventilated installation, within a few days, five workers died and thirty-five more became disabled. But the manufacturing company has always followed the practice of firmly rejecting the toxicity of its products. And in the next few decades, the bulk of gasoline in the States contained lead tetraethyl.
Thus, geochemist Claire Patterson spoke immediately against the giants - the US petroleum and chemical industries. Scientists first tried to buy, and then began to poison. Deprived of sponsorship, contracts, banned work on many US departments, including with the allegedly neutral US health service. In 1971, he was expelled from the United States Research Council on Atmospheric Pollution (a person who learned the most on the planet to determine the amount of lead was excluded from an organization that studies the amount of lead).
Still, the campaign launched by Patterson led to a ban on lead additives in fuel in the United States in 1986. In the European Union, leaded petrol has been banned since January 1, 2000, although the majority of member countries imposed a similar ban much earlier.
Through the efforts of this man in just a few years, the lead content in the body of Americans fell by 80%.