A Pew Center report examining the impacts of climate change on the U.S. environment, provides compelling evidence that ecosystems are already responding to climate change. Climate Change is NOT a theory, it is real, and it is happening now, with potentially cataclysmic impacts upon global ecological sustainability. Humanity will continue to ignore this risk at great peril.

Global Warming Hits U.S. Ecosystems - Science Magazine

Global warming has begun to affect a wide array of species in the United States, from plants that now flower earlier to red foxes that are venturing farther into Canada, says a report released today by the Pew Center on Global Climate Change. The authors say their analysis is the first to directly link regional biological changes to anthropogenic climate change.