Re: Life on Earth
Considering the cycles humans go through civilizations can rise and fall many times between now and then.
Perhaps by the time the sun starts to kick the bucket the highest form of human civilization will be about the equal of the aztecs.
"So quotal looked up into the sky and mumbled that the sun god must still be angry, and that more intellectual human sacrifices (more thinkers) would have to be made, he wiped the persperation from his brow and continued on his way to gather more wood from the trees that had withered and died due to the drought."