We must think before we do. Even World Environment Day this year ask people to think before we eat. What to eat, why we eat and can we eat? and can we finish it? Do not misuse scientific findings. Like chemical weapons, sometime we invent it to kill our enemy BUT finally we kill our own soldiers. Some time we fail to think far.

http://www.thestar.com.my/News/World/2013/09/19/Assad-says-will-abide-by-chemical-weapon-agreement--Fox-News.aspx
Chemical weapon disposal will take a year, cost $1 billion - Assad
"As I said, it needs a lot of money. It needs about 1 billion. It is very detrimental to the environment. If the American administration is ready to pay this money and take the responsibility of bringing toxic materials to the United States, why don't they do it?"