A more thorough explanation:

Greenhouse gases are a group of gases that occur naturally or are produced by human activities. These gases trap heat in the Earth's atmosphere, causing global warming. The accumulation of greenhouse gases in the atmosphere allows more solar energy to reach the Earth's surface and absorb solar radiation. The most common greenhouse gases are carbon dioxide, methane, nitrous oxide, and fluorinated gases.

Humans are responsible for most of the increased greenhouse gases through activities such as burning fossil fuels and manufacturing chemicals. For example, when we drive cars or use electricity, we release carbon dioxide into the atmosphere. When we raise livestock or dispose of waste, we release methane and nitrous oxide.

The Environmental Protection Agency (EPA) and individual states regulate greenhouse gas emissions to prevent pollution and global warming. The Clean Air Act (CAA) is the basis for the EPA's regulations controlling greenhouse gas emissions. The EPA targets specific emitters of greenhouse gases, such as carbon dioxide from vehicles and power plants. Many states, like California, have even stricter regulations to reduce emissions and pollution.

For example, if a factory releases too much carbon dioxide into the air, the EPA may fine them or require them to reduce their emissions. By regulating greenhouse gas emissions, we can help slow down global warming and protect our planet.