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Greenhouse gas emissions are enhancing the
greenhouseeffect.  Image from antemedius.com

Anthropogenic climate change is a major problem that current and future generations cannot afford to ignore.  If nothing is done to curb the human causes of climate change, then the world may experience severe and irreversible effects, including a dramatic decrease in biodiversity, rises in sea level and extreme weather events which will threaten human livelihood.  Climate change not only affects the natural environment, but it directly affects human health, economics, and society.

Ice caps are melting and glaciers are retreating, affecting freshwater availability
 and causing rises in sea level.  Image from nasa.gov

Deforestation results in less carbon dioxide uptake.  Image from thinkglobalgreen.org