Carbon dioxide levels pass ‘symbolic mark’


AlJazeeraEnglish

Published on May 10, 2013

Carbon dioxide levels in the atmosphere have broken through what scientists call a symbolic mark. A remote US laboratory has measured CO2 levels at 400 parts per million. Al Jazeera’s Tarek Bazley explains what that could mean for earth’s climate.

Global Climate Change http://courses.dce.harvard.edu/~envre130
Environmental Justice http://courses.dce.harvard.edu/~envre145
Environment Ethics http://courses.dce.harvard.edu/~envre120

Leave a comment