46 years ago today, March 28, 1979 (March 1, 1979, lunar calendar), a leak occurred at the Three Mile Island nuclear power plant in the United States. Anti-nuclear activists demonstrated in front of the Three Mile Island Nuclear Power Plant. At 4 a.m. on March 28, 1979, in the operating room of the Group 2 reactor of the Three Mile Island Nuclear Power Plant in Pennsylvania, the red light flashed, the siren gave alarm, the turbine stopped, and the reactor core pressure and temperature suddenly increased. Two hours later, a large amount of radioactive material spilled. As a nuclear engineer, U.S. President Carter did not panic after receiving the news. He sent an official from the Nuclear Regulatory Commission to Harrisburg on his behalf. However, as the American and international media have reported the Three Mile Island incident as headlines in recent days, some famous American media people have begun to use words like "terror" to describe the incident and also said that "the situation will get worse." On April 1, Carter personally inspected the Three Mile Island nuclear power plant. Shortly after this inspection, experts from all walks of life in the United States reached the unanimous conclusion that a hydrogen explosion was basically impossible and the crisis was basically resolved. Everyone gave a false alarm. Six days later, the temperature at the core of the reactor began to drop and the vapor bubbles disappeared-the threat of causing a hydrogen explosion was eliminated. Although the 100 tons of uranium fuel did not melt, 60% of the uranium rods were damaged and the reactor was eventually paralyzed. After the accident, the United States was shocked. Residents near the nuclear power plant were panicked, and about 200,000 people evacuated the area. People in major cities in the United States and residents in areas where nuclear power plants are being built have held rallies and demonstrations, demanding that the construction of nuclear power plants be suspended or closed. Governments in the United States and some Western European countries have had to re-examine their nuclear power development plans. Top ten earthquakes, tsunami disasters, and nuclear leakage accidents in history.