Humans have changed the world’s climate systems by emitting carbon dioxide and other greenhouse gases.
According to a new paper, humans could warm the world so much that we’d cause the planet’s natural climate systems to trigger further warming — a scenario called “Hothouse Earth.”
In that world, the average temperature could rise 4 or 5 degrees Celsius more than it already has, leading to extreme heat and up to 200 feet of sea-level rise.
Our ability to keep Earth habitable may be more limited than we realize.
Human activity could push the planet over a number of tipping points that would cause global temperatures to rise even higher than we’ve driven them already, according to a new paper published in the journal Proceedings of the National Academy of Sciences.See the rest of the story at Business Insider
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