When the space shuttle touched down in California instead of in Florida, due to bad weather, on the anniversary of 911, California residents who heard the sonic boom thought a bomb had gone off. Are we preparing for another potential terrorist attack? Well, researchers have developed a postage stamp-size sensor that can sniff out poisonous gases.
It changes color as a warning and could also be helpful in workplaces where hazardous materials are used. Researcher Linda Birnbaum says, “This paper brings us one step closer to having a small wearable sensor that can detect multiple airborne toxins.”