I don\'t think human civilization will destroy itself any time soon. Of course there will always be wars and violence - that\'s just human nature. Keep in mind that the human population never decreased by more than 30% in history (even the black death didnt do that).
There are many potential conflicts ahead. Here are just two of them for now.
- For one, the problem with energy. The oil supply is said to be running out and peak shortly then decline. The change from fossil fuels to alternatives will have a big impact. There\'s research into hydrogen fuel cells and
plasma fusion reactors for near future energy demands. Farther down the line, highly efficient solar cells (enhanced to 60% efficiency) will need to do the job. After all, the earth recieves a thousand or so terawatts of solar power from the sun at the surface (1,410 W/m^2).
-Fresh water and food. With population set to increase to 10 billion in about 30 years, this will get more important. This is where nanotech and biotech can come in handy. Nanotech in the process of catalyzing and filtering sea water undergoing reverse osmosis and making it drinkable. Biotech will have to take care of the food problem by GM or other more reliable methods (even though there is a lot of opposition).
Plenty more problems would come up - some that we couldn\'t imagine today. Others would just fade away or become lesser.