Wearables are great and all, but usually, they can track very basic things like your heart rate and extrapolate other information through clever algorithms. Yale School of Public Health Assistant Professor Krystal Pollitt has developed a lightweight, unobtrusive wristband, called the Fresh Air, reports. This wearable looks like a small wristwatch and utilizes an air sampler instead of a watch face to detect air pollutants.

While Fresh Air was initially designed to detect pyrene, nitrogen dioxide, and other pollutants, professor Pollit believes the wristband can be modified to detect small ...