"We have reached a point of planetary emergency.
Staying above 350 ppm CO2 for long (present level is 390 ppm) risks irreversible catastrophic effects."

Dr. James Hansen, NASA
US Congressional Committee 2008
"There is no guarantee that catastrophe can be avoided even if we start taking serious evasive action immediately."

Dr. John P. Holdren (2006)
Now U.S. Government Science Advisor
Meeting the Climate Change Challenge
Full Presentation (PDF/PowerPoint)
Must Read
"In the face of an absolutely unprecedented emergency, society has no choice but to take dramatic action to avert a collapse of civilization"
Blue Planet Laureate’s UN Rio+20 statement Feb 2012.
​​
"Climate change is the biggest global health threat of the 21st century. Its impacts will be felt by most populations in the next few decades and it will put the lives and livelihoods of billions of people at increased risk." (Managing the Health Effects of Climate change, University College London  2009)
Climate Change Assessment (PDF)

University College London UCL
and The Lancet 2009

Resources
State of the Global Climate June 2012: most comprehensive review focused on the past 20 years.

Committed Global Climate Planetary Emergency: especially covers why COMMITTED emergency. ​​

Arctic climate planetary emergency June 2012 short series of explanatory images. 

Committed climate disruption food emergency June 2012.

​​Linking fossil fuel resource development with key social impacts of committed global warming

International Symposium on Society and Resource Management​ Edmonton Canada 2012

​​We Can No Longer Ignore That Environmental Apocalypse Is Coming-charts. Business Insider Jun. 13, 2012 
CLIMATE EMERGENCY INSTITUTE

​The health and human rights approach to climate change