Smell Test
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.”
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