Scientist explains why dogs can smell better than robots

Published on May 16, 2019

Dogs can smell explosives like landmines, and detect medical conditions including seizures, diabetes, and many forms of cancer -- with up to 98% accuracy. Inventor Andreas Mershin wants to replicate that -- and put a nose in every cell phone. WIRED's Emily Dreyfuss spoke with Mershon to find out why that's easier said than done, and to learn what building a robotic nose has taught us about smell.