The Environmental Protection Agency recently released a digestible report breaking down the science behind climate change. Here are some highlights from the report:
Worldwide greenhouse gas emissions have increased 26% from 1990 to 2005. Carbon dioxide emissions, responsible for 75% of total emissions, increased 31%.

This image speaks for itself. The extent of Arctic sea ice last year was 24% below the average from 1979-2000.

And here’s a visual representation on plant hardiness in the US and the trend moving northward, with zone 3 areas almost completely disappearing.

See the full EPA report here.
Source: Treehugger