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The IPCC’s dire warning to us all | Nature

Humanity must slash its carbon emissions immediately to have any hope of avoiding the more dire effects of climate change. That’s the sobering assessment from the latest Intergovernmental Panel on Climate Change (IPCC) report. We will have to curb greenhouse gases by at least half of 2017 levels by 2030, and then achieve carbon neutrality by 2050, to limit global warming to 1.5 °C above pre-industrial levels. Keeping warming below 1.5 °C will partially mitigate the impacts, including extinctions, melting of Arctic ice, damage to coral reefs, extreme weather and flooding. The world has already warmed by 1 °C.

The IPCC also describes how it can be done — and it won’t be easy. Low-carbon energy systems such as wind and solar power will need to provide most of the world’s electricity by mid-century, forests will need to be expanded to take up more carbon dioxide and carbon will need to be extracted from the atmosphere and pumped underground. Proposed lifestyle changes include people eating less meat, riding bicycles and flying less.

Read the whole story here: IPCC says limiting global warming to 1.5 °C will require drastic action

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New U.N. report on climate change carries life-or-death warning


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