earth

The 400 ppm threshold

Submitted by Rhys Roth on

The only way back to Target 350 is to stop putting so much carbon pollution in the air and at the same time to remove a lot of the accumulated carbon from the air.

Read More

Building natural carbon: five policy principles

Carbon dioxide levels hit 395 parts per million in 2012, the highest in four or five million years when sea levels were around 80 feet higher and temperatures up to 10° Fahrenheit hotter. If we sustain those CO2 levels, or go higher as we are doing, a completely different world will emerge. 

Read More