R/OVERPOPULATION! Eventually there will be too many people on the globe. How many people can live on earth without compromising pollution, nature, food, well being, and virtually everything else?
One problem I see is people's difficulties with accepting death. The world needs humans to die in order to keep a balance. Quit trying to figure out how to live longer, beat cancer, etc...just die for the well being of human future. Secondly there should be a limit on how many children can be had per household...AND, who should be allowed to have children.