Global climate change

The Earth’s atmosphere contains a delicate balance of
naturally occurring gases that trap some of the sun’s heat near the Earth’s surface. This
“greenhouse effect” keeps the Earth’s temperature stable. Unfortunately, evidence is
mounting that humans have disturbed this natural balance by producing large amounts
of some of these greenhouse gases, including carbon dioxide and methane. As a result,
the Earth’s atmosphere appears to be trapping more of the sun’s heat, causing the
Earth’s average temperature to rise – a phenomenon known as global warming. Many
scientists believe that global warming could have significant impacts on human health,
agriculture, water resources, forests, wildlife, and coastal areas. For more information