[troutman]

Also, NASA:

http://climate.nasa.gov/

CO2 currently 399 parts per million.

http://www.ipcc.ch/

The Fifth Assessment Report (AR5) provides a clear and up to date view of the current state of scientific knowledge relevant to climate change.

http://www.state.gov/documents/organization/219038.pdf

http://www.globalchange.gov/

http://nca2014.globalchange.gov/high...anging-climate

http://www.epa.gov/climatechange/sci.../download.html

Summary of Key Points:
http://www.epa.gov/climatechange/pdf...sheet-2014.pdf