Yes; I think it is likely, and before the explosion of the Sun which would definately kill all life on Earth. At the moment, the most likely way is that we will use all the resources that the Earth has, and so run out of food. This is coupled with the planet warming up (due to our own activities); as land and crops will disappear. Or, there will be a nuclear war and we will nuke each other.
The only other possiblities are ‘natural’ – so an asteroid or maybe some combination of volcanoes + our own actions could contribute to our downfall. I actually think that, whilst possible, we should worry about our own actions rather than these too much (there are plans on how to deflect asteroids away from the Earth should we need to).
Some people suggest that when we have used up everything on the earth we should colonise other planets and just move there. Whilst i do believe in the future we would be able to do this, I think it is parasitic behaviour -to use up everything we can and then go somewhere else. Let’s get it right on the Earth and be able to holiday on the Moon etc, rather than ruin the beautiful planet that we have!
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