The National Environmental Policy Act (NEPA) was established in 1970, as a result of the growing sustainability movement. NEPA requires all executive federal agencies to perform environmental assessments and environmental impact statements. In 1970, we also celebrated the very first “Earth Day” which took place on April 22nd. In the same year, the U.S. government created the Environmental Protection Agency (EPA) and passed the Clean Air Act. The EPA was formed by executive order to drive environmental research and education, as well as enforcing environmental standards and laws.
Which of the following best describes the main focus of sustainability in the modern world?
If a scientist discovers a new synthetic chemical that appears to have many potential uses, why must society be extremely cautious after the new chemical is manufactured?
Decomposing plants and other organisms, buried beneath layers of sediment and rock, have taken millennia to become the carbon-rich deposits we now call fossil fuels. These non-renewable fuels, which include coal, oil, and natural gas, supply about 80 percent of the world’s energy. They provide electricity, heat, and transportation, while also feeding the processes that make a huge range of products, from steel to plastics.
When fossil fuels are burned, they release carbon dioxide and other greenhouse gases, which in turn trap heat in our atmosphere, making them the primary contributors to global warming and climate change.
Fossil fuels such as coal, oil, and natural gas supply much of the world's energy. However, these fuels have a tremendous negative effect on the environment. Which of the following would be the best strategy to alleviate this problem?
What is the main factor contributing to the increased human population?
