Short story of time travel
Back to the Past The main character was a young historian who was accidentally transported to the future. He found that the future world was facing a disaster because the excessive use of energy by humans had caused the rapid deterioration of the earth's environment. In order to save the future, the protagonist decided to return to the past to stop mankind from using fossil fuel. The protagonist returned to the United States in the 1960s through a space-time tunnel. He entered the university at that time and promoted environmental awareness to students, encouraging them to give up the use of fossil fuel and switch to sustainable energy. The protagonist also established an organization dedicated to the promotion of sustainable energy. After some hard work, the protagonist finally attracted people's attention and the government began to introduce policies to restrict the use of fossil fuel. In the late 1960s, the world began to shift to clean energy, and the future world finally avoided disaster. The protagonist eventually became a famous person in history. His efforts changed the direction of the future and saved the future of Earth.