It shows a definite increase in the emission of carbon in the last 200 years of a 1000 year time span from fossil fuel burning by humans in the northern hemisphere. (hubpages.com)
The climate system already has some heating yet to be realized; it has not yet caught up with the effects of fossil fuel burning of past decades. (nsidc.org)
By adopting these technologies, states can also reduce greenhouse gas (GHG) emissions significantly, as fossil fuels burned for transportation represent the largest share of the region's GHG emissions. (2030.acadiacenter.org)