The Environmental Protection Agency explains that the ozone layer of the atmosphere, Earth's protective layer, is being damaged by human activities, particularly the production of greenhouse gases. These gases are known ... More »

The ozone layer, also called the stratosphere, has a primary function of absorbing ultraviolet sunlight. The absorption of ultraviolet rays has many effects, such as atmospheric temperature regulation and protection of b... More »

The ozone layer protects all living things on Earth by absorbing some of the harmful UV rays of the sun. UV radiation can cause skin cancer and eye damage. More »

The gaping hole in the ozone layer of the atmosphere over the Antarctic was caused primarily by high concentrations of ozone-depleting chemicals called CFCs. The vast hole in the ozone was discovered by scientists in the... More »

Heat energy comes to the Earth as sunlight and leaves in the form of infrared radiation, but greenhouses gases trap some of the radiation before it can escape the atmosphere again, leading to the "greenhouse effect." Thi... More »

The greenhouse effect is the trapping of heat by a layer of gases surrounding the Earth. The heat is trapped by atmospheric gases such as carbon dioxide, methane, water vapor and nitrous oxide. More »

Burning fossil fuels leads to global climate change by emitting carbon dioxide and other greenhouse gases that trap heat in the Earth's atmosphere. Extracting and transporting fossil fuels also contribute to air and wate... More »