In a little more than five years – sometime in early 2029 – the world will likely be unable to stay below the internationally agreed temperature limit for global warming if it continues to burn fossil fuels at its current rate, a new study says. The study moves three years closer the date when the world will eventually hit a critical climate threshold, which is an increase of 1.5 degrees Celsius since the 1800s.
The biggest change from the 2021 report to this year's studies is that new research show bigger reductions in aerosol emissions — which come from wildfires, sea salt spray, volcanoes and burning fossil fuels — that lead to sooty air that cools the planet a tad, covering up the bigger greenhouse gas effect.
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