See the NYT Article:
Emissions rose 5.9 percent in 2010, according to an analysis released Sunday by the Global Carbon Project, an international collaboration of scientists tracking the numbers. Scientists with the group said the increase, a half-billion extra tons of carbon pumped into the air, was almost certainly the largest absolute jump in any year since the Industrial Revolution, and the largest percentage increase since 2003.
The increase solidified a trend of ever-rising emissions that scientists fear will make it difficult, if not impossible, to forestall severe climate change in coming decades.
The trend bodes ill. According to IPCC modeling, which may be conservative, the business-usual-scenario (BUA) will result in a global temerature increase of 6 degrees C by the end of the century), an increase associated with catastrophic climate change for human society. Most scientists fear average warming scenarios above 2 degrees, some consider anything above 1 degree will have highly likely catastrophic results. The IEA's annual report released last week took the position that humanity has five more years to get on a sufficient 100+ year mitigation path or perilous climate change will result.