Scientists have developed a highly sensitive, wearable gas sensor for environmental and human health monitoring. The sensor device is an advanced version of the existing wearable sensors and uses a self-heating mechanism and allows for quick recovery and reuse of the device. Researchers use a laser to pattern a highly porous single line of nanomaterial that detect gas, biomolecules. Researchers say that the U.S. Defense Threat Reduction Agency has already shown its interest in this wearable sensor to detect chemical and biological agents that could damage the nerves or lungs.