the world will incinerate by the suns uv rays, world war 3 might happen. semi auto lazer weapons, blah blah blah, americans causing war on places with oil etc, although new medicines will be invented to cure cancer and aids, we will know what the bermuda triangle is all about and will start to learn about teleportation and there will be space outposts where people would live in space etc, or alternatively, a limit to 1-2 children per family