November 2013: Even if carbon dioxide emissions came to a sudden halt, the carbon dioxide already in Earth's atmosphere could continue to warm our planet for hundreds of years, say researchers.
Princeton University-led research, published in the journal Nature Climate Change, suggests that it might take a lot less carbon than previously thought to reach the global temperature scientists deem unsafe.The researchers used a computer model of Earth to test what would happen if after 1,800 billion tons of carbon entered the atmosphere, all carbon dioxide emissions suddenly stopped.


