On a personal level, John has nailed it.
But I think Bob has a valid concern.
The problem is, there may not be much that can be done about it.
Mankind has approached a technological understanding that can now wipe us out completely, or send society back to the stone age.
And not just from something like nuclear weapons!
1) Somewhere in the world, humans have already been cloned. They have experienced issues already with animals that have been cloned. What happens when humans are? Not much initially, but their offspring. Does it endanger others, as this selective DNA process spreads?
2) There are weapons and research into new energies, that have the potential to unleash amounts of energy we have NEVER seen before. This could be good, yet, what about accidents? In 2010 a super laser will be tested. Actually 192 massive lasers will be focused onto one pea-sized capsule of fuel, heating it to 180 MILLION degrees Fahrenheit, creating a thermonuclear fusion. It will produce more energy than the sun's core, which is "only" 27 Million Fahrenheit.
3) Crops were grown with a human birth control ingredient, accomplished through some sort of DNA manipulation. They tested the crops in a field in America. But nature being what it is, birds and wind, etc... carried the seeds of this crop to as much as 30 miles away from the test field. THIS HAPPENED KIDS! Why wasn't it front page news? Has this now seeped into our food supply? Who was "birth controlling crops" designed for? Americans? Third world countries? Was America trying to control the birthrate in other countries as some means of staving off starvation or something else? Without telling them? These questions aren't being asked, or answered! THAT ALONE should scare the hell out of everyone here, when most likely, EVERYONE HERE gets their food from the supermarket mostly.
4) We are so dependent on technology now, on electricity on computers. Stoplights that control traffic. Computers that help control airplanes, and defense systems, etc... The military is now working on weapons that can be focused over an entire city or even country, and knock out ALL POWER in a single blow. Imagine the electricity going off, computers off, signal lights off, train crossing lights, air traffic control towers, EVERYTHING, all off in a single blast. Maybe even worse, is the testing of Haarp being planned, which when put into effect, can heat parts of the ATMOSPHERE so it is literally raised and falls back down. They aren't positive what will happen when they do this, but they are going to try it out anyway. This project alone, Haarp, is believed to have the ability eventually, to control weather itself over areas chosen, and possibly even influence thought patterns in the human brain from the resulting waves produced. Imagine controlling the minds, to some degree, of an entire population, maybe confusing them all, or making them more docile somehow. They are literally working on this, no joke!
http://www.haarp.net/
How about weapons that can kill all people in a selected area, but leave the buildings standing and untouched. What stops a racist from deciding that an entire African country can be eliminated, and leave the city's buildings there for the using? What stops a powerful group of wealthy Muslims from deciding that the same should be done to the infidels in America?
Do you guys understand what we are approaching here?
These are not science fiction tales, or possibilities for some distant future, 100 years from now.
Some of these very weapons and systems, are in testing phases, NOW!