The primary greenhouse gas and driver of climate change.

A chemical compound found in the Earth’s atmosphere, such as carbon dioxide, methane, water vapor, and other human-made gases.

Greenhouse gases released into the air that are produced by numerous activities, including burning fossil fuels, industrial agriculture, and melting permafrost.

Sources of non-renewable energy, formed from the remains of living organisms that were buried millions of years ago.

More water is released into the ocean as glaciers and land ice melts.

Energy that comes from naturally replenished resources, such as sunlight, wind, waves, and geothermal heat.