How long can Earth support life in the future?

The biological and geological forthcoming of the Earth's life expectancy can be estimated based upon the effects of several long-term influences. These include the chemistry of the Earth's surface, the rate of cooling of the planet's interior, the gravitational interactions with other objects in our solar system, and a steady increase in the sun's luminosity.

Impacts from comets or asteroids have the potential to result in the extinction of humanity. Also, technology could have a negative effect on the future of the Earth. It could cause significant changes in the environment, which could propel the possibility of human extinction.