How many of you have a carbon monoxide monitor in your home? The problem with many deadly gases is this: THEY ARE ODORLESS. Hence, they can be very difficult to detect. Before you know it, you could be exposed to lethal levels of a gas without having a hint that you're in danger.

Well, researchers at MIT have developed the most sensitive gas sensor using nanotechnology. Carbon nanotubules aligned across microelectrodes form the basis for this sensor that can detect deadly gases like sarin. We need this type of technology because of the threat of terrorist attack. Plus, this type of technology could really help with environmental monitoring and Workplace safety. Way to go chemical engineering scientists! Read more here.