Smoke events in the Maas Valley:

During the period of 1930, nearly 60 people died in one week due to sulfur dioxide and dust pollution, and thousands of people suffered from respiratory diseases.

Los Angeles photochemical smog event:

During the period of 1943, a large number of automobile exhaust in Los Angeles produced chemical smog under ultraviolet radiation, which caused a large number of residents to have red eyes, tears and sore throats, and the mortality rate increased greatly.

Donora smoke incident:

1948 sulfur dioxide, oxides and dust discharged from zinc smelters, steel mills and sulfuric acid plants in Donola, Pennsylvania, USA, caused serious air pollution and sickened more than 5,900 residents. On the third day of the incident, 17 people died.

London smog incident:

1952 in London, England, 4,000 people died in the first two weeks, and more than 8,000 people died in the next two months because the smoke and sulfur dioxide emitted by coal combustion did not disperse in the dense fog in winter.

Asthma occurred in the city on the 4th:

196 1 years ago, the exhaust gas from heavy oil combustion in petrochemical and industrial industries seriously polluted the atmosphere, which made the incidence of respiratory diseases, especially asthma, of residents suddenly rise. The incidence of elderly people over 50 years old is about 8%, and more than 0 people die/kloc-0.

Minamata disease incident:

1953 ——1956 in minamata city, Kumamoto prefecture, Japan, a petrochemical plant discharged mercury-containing wastewater, and people ate aquatic organisms such as fish, shrimp and shellfish contaminated with mercury and rich in methylmercury, resulting in a large number of central nervous system poisoning among residents, with a mortality rate of 38% and 283 people suffering from mercury poisoning, of which more than 60 people died.

Toyama Pain Event:

1955 ——1972 In Kawaguchi, a prodigy in Toyama Prefecture, Japan, cadmium-containing wastewater discharged from a zinc-lead smelter polluted river water and rice, and residents were poisoned after eating it. 1972, 258 people got sick, 128 people died.

Aichi rice bran oil incident:

During the period of 1968, polychlorinated biphenyls (PCBs) were used as heat carriers in the deodorization process when rice bran oil was produced in Aichi Prefecture, Kitakyushu City, Japan. This poison was mixed with rice bran oil and eaten by people, causing poisoning, with more than 10000 patients and death 16 people.

Bhopal incident:

1984, the pesticide plant storage tank of the United Carbide Company of the United States in Bhopal, Madhya Pradesh, India burst, and a large amount of highly toxic methyl isocyanate leaked out, resulting in at least 2,500 deaths and hundreds of thousands of injuries.

Chernobyl nuclear pollution incident:

1986, the reactor of Chernobyl nuclear power plant in Kiev, the former Soviet Union exploded, a large amount of radioactive materials leaked, tens of thousands of people were injured by radiation, 3 1 person died directly, and 13 thousand residents were evacuated. Pollution spread to neighboring countries, and nuclear dust spread all over Europe.