On August 6, 1945, the United States used a massive atomic weapon against Hiroshima, Japan. Three days later, a second bomb was dropped on the city of Nagasaki. In the first two months of the bombing, the acute effects killed 90,000-166,000 people in Hiroshima and 60,000-80,000 in Nagasaki. In the months and years that followed, the very painful effects of these days in history still lingered. All humans who survived the explosion suffered from radiation exposure. About forty-five percent of the 280,000 people who survived the exposure were still alive sixty years later. This brought to light the significant harm that radiation exposure could cause to people. Once it became known that such colossal radiation exposure could underdevelop children, increase long-term cancer risks, and exponentially deteriorate cities and forests, environmentalism evolved from a simple concept to an active movement. With Japan's surrender and closure at hand, Americans welcomed peace while Robert Oppenheimer and others worried about the consequences of unleashing atomic energy. Shortly after the war, Oppenheimer warned: “We have created a thing, a terrible weapon that has suddenly and profoundly altered the nature of the world… a thing that, by all the standards of the world in which we have grown up, is evil. " Nearly all Americans, including him, believed that the “evil thing” had brought peace in 1945, but no one knew what it would bring in the future, even though everyone knew that it would inevitably shape the world to come, as indeed it did This catastrophic event during World War II undoubtedly marked the point at which environmentalism truly began to emerge, and from then on, various political, economic, and ecological factors shaped... the focus of the paper... factor. crucial in human affairs, and the nation as a whole has done a great job of keeping the green movement alive. The fact that we are now much more likely to appeal to scientific data and experimental research to make arguments for the protection of nature or against polluting industries, it gives us more power to properly brainstorm and implement green care systems. Politicians record the work of different researchers and use automated climate models to combat global warming, while medical researchers rely on health statistics. publishes to argue against mercury pollution and other harmful elements. Whether these arguments succeed or fail, however, the vast achievements of the green movement still depend on the vision, passion and commitment of not only environmentalists, but of the majority of people living on planet Earth..