In rare good news, astrobiologists have determined the earth should be habitable for at least another 1.75-billion years. For reference, that's 1.75-billion years minus 50 years more than I care about.
The research was led by Andrew Rushby, from UEA's school of Environmental Sciences. He said: "We used the 'habitable zone' concept to make these estimates - this is the distance from a planet's star at which temperatures are conducive to having liquid water on the surface."
"We used stellar evolution models to estimate the end of a planet's habitable lifetime by determining when it will no longer be in the habitable zone. We estimate that Earth will cease to be habitable somewhere between 1.75 and 3.25 billion years from now. After this point, Earth will be in the 'hot zone' of the sun, with temperatures so high that the seas would evaporate. We would see a catastrophic and terminal extinction event for all life.
"Of course conditions for humans and other complex life will become impossible much sooner - and this is being accelerated by anthropogenic climate change. Humans would be in trouble with even a small increase in temperature, and near the end only microbes in niche environments would be able to endure the heat.
Obviously, we will nuke ourselves to extinction long before the earth becomes naturally uninhabitable. Hell, if I had the power I'd do it right now. AND I DO. *lifts plastic cover, mashes big red button* HAHA -- do-over, God!
Thanks to TBTMH, who agrees somebody clearly forgot to include the impending robot and zombie apocalypses into their equation.