Planet has only until 2030 to stem catastrophic climate change, experts.
Holding global warming to a critical limit would require "rapid, far-reaching and unprecedented changes in all aspects of society," says a key report from the global scientific authority on climate change.
The Intergovernmental Panel on Climate Change (IPCC) report was released Monday at the 48th Session of the IPCC in Incheon, South Korea.
It focuses on the impacts of global warming reaching 1.5 degrees Celsius (2.7 degrees Fahrenheit) above pre-industrial levels.
The planet is already two-thirds of the way there, with global temperatures having warmed about 1 degree C.
According to the report, the planet will reach this crucial threshold as early as 2030 based on our current levels of greenhouse gas emissions -- and avoiding going even higher will require significant action in the next few years.
Global net emissions of carbon dioxide would need to fall by 45% from 2010 levels by 2030 and reach "net zero" around 2050 in order to keep the warming around 1.5 degrees Celsius.
Lowering emissions to this degree would require widespread changes in energy, industry, buildings, transportation and cities, the report says.
But even if warming is able to be kept to 1.5 degrees Celsius, the impacts would be widespread and significant.
Temperatures during summer heatwaves, such as those just experienced across Europe this summer, can be expected to increase by 3 degrees Celsius, according to the report. (CNN)
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