On April 26th, 0986, local time 1: 24, the nuclear power plant in Ukraine and Chernobyl in the Soviet Union (originally named after Lenin). The accident caused 3 1 person to die on the spot, and tens of thousands of people died or became seriously ill due to the long-term influence of radioactive materials. Up to now, there are still abnormal fetuses born under the influence of radiation. This is the worst nuclear accident in history. The leaked radioactive dust drifted with the atmosphere to the western part of the former Soviet Union, eastern Europe and Scandinavia in northern Europe. Ukraine, Belarus and Russia are the most polluted. Due to the wind direction, it is estimated that about 60% of radioactive materials have landed on the land of Belarus. The accident caused public concern about the safety of nuclear power plants in the former Soviet Union, and indirectly led to the disintegration of the Soviet Union. After the disintegration of the Soviet Union, independent countries, including Russia, Belarus and Ukraine, still invest money and manpower in post-disaster and residents' medical care every year. Because it is difficult to estimate the number of people who died directly or indirectly in the accident, the long-term impact after the accident is still unknown. In 2005, an IAEA report concluded that 56 people died-47 nuclear power plant workers and 9 children suffered from thyroid cancer-and estimated that about 4,000 people would eventually die from diseases caused by accidents. Greenpeace and others questioned the findings.