It is scary to not know when an asthma attack is going to happen. Asthma can hold you back from so many activities in the fear that an attack might occur. Thankfully, a device is being created to be able to detect an attack before it happens! An article by Ryan F. Mandelbaum on Popular Science.com introduces this device and explains how it is going to work. The device is called a Health Environment Tracker, or HET for short. It is a 3 part system that together will collect data about the ozone levels, as well as volatile organic compounds that can worsen asthma attacks.