Welcome to QuiniV.
Our meltdown is started.
please stop eating meat….
We are currently swamping the Earth’s ability to absorb greenhouse gases. 2015 saw the largest annual increase in carbon dioxide since records began – far higher than the Earth has experienced hundreds of thousands of years.
More carbon dioxide in the atmosphere means higher temperatures. There is already one positive feedback loop in operation; the extra warming from our emissions is increasing the amount of water vapor in the atmosphere, which further increases temperatures. Fortunately, this is not a very strong feedback loop.
Unfortunately, there seem to be other, much more powerful ones lurking in the event of further warming. Tipping points such as the thaw of permafrost and release of the very powerful greenhouse gas methane in large quantities would drive world temperatures well beyond the 2℃ threshold.
Even if we came to our collective senses and rapidly reduced carbon emissions at that point, we would still have to revert to drastic geoengineering to rein in further warming. There is no guarantee that such climate brakes will work. If they fail, our civilization would be on a collision course with a much hotter planet.