Researchers based at Princeton University found that Earth's terrestrial ecosystems have absorbed 186 billion to 192 billion tons of carbon since the mid-20th century, which has significantly contained the global temperature and levels of carbon in the atmosphere.
Fuente : http://www.eurekalert.org/pub_releases/2013-10/pu-...
Fuente : http://www.eurekalert.org/pub_releases/2013-10/pu-...