In a new study scientists have been investigating how CO2 levels helped to end the last ice age.
The research has shown that rising CO2 levels combined with a number of other factors were responsible for warming the planet enough to end the last ice age around 20,000 to 10,000 years ago. Lead author Jeremy Shakun emphasised that while changes in the Earth's orbit were a factor, the amount of carbon dioxide in the atmosphere played a much more significant role. "Our study shows that CO2 was a much more important factor, and was really driving worldwide warming during the last deglaciation," he said.
"Harvard scientists are helping to paint the fullest picture yet of how a handful of factors, particularly world-wide increases in atmospheric carbon dioxide, combined to end the last ice age approximately 20,000 to 10,000 years ago."
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