Four billion years from now, the increase in the Earth's surface temperature will cause a runaway greenhouse effect, creating conditions more extreme than present-day Venus and heating Earth's surface enough to melt it. By that point, all life on the Earth will be extinct.

What will happen to the Earth in the future?

Besides drought and sea level rise, there are a variety of other likely changes around the world. There might be intense heat waves, increased incidences of infectious and respiratory diseases, changes in ecosystems particularly at high latitudes, and loss of biodiversity ... just to name a few.

How much time do we have left?

If we simply assume that we find ourselves at a random point in human history, then the math tells us with 95% confidence that humans will survive no more than 7.8 million years, but at least another 5,100 years.