Little time left to halt global warming

The new report, published today in the journal Nature Climate Change, sounds a further loud warning that time is running out. It suggests that for a "likely" chance (more than 66%) of holding warming below 2C by the end of this century, emissions must peak before 2020. Emission levels will also have to drop drastically to around 44 billion tonnes in 2020, and then keep falling. By 2050, they will need to be well below 1990 levels at around 20 billion tonnes, says the research.
This is an ambitious goal. Last year's emission levels were estimated to be 48 billion tonnes. If no action is taken to reduce global emissions, experts fear they could grow to 56 billion tonnes in 2020. Authors of the new study, led by Dr Joeri Rogeli, from the Swiss science university ETH Zurich, wrote: "Without a firm commitment to put in place the mechanisms to enable an early global emissions peak followed by steep reductions thereafter, there are significant risks that the 2C target, endorsed by so many nations, is already slipping out of reach."

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