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If humans became extinct, mother Earth will heal the planet In no time. The Earth has been hotter and colder in the past. There will be another species to take its place.

If you live long enough the sun will gradually get hotter and larger as it ages. It will exhaust its fuel and turn into a red giant, so large it may even consume the Earth. By this time any people left will have to move to a new solar system. We are currently in a interglacial period, where some...