Thanks to a new gadget that gulps pollution right out of the air, scientists may be able to reduce the environmental damage caused by the hundreds of millions of cars worldwide.

Intro theme and sound effects by Adam Dylewski; Lasting Hope and Space Explorers music by Kevin MacLeod (incompetech.com); Creative Commons licensed audio from freesound.iua.upf.edu includes slurping sound by FranciscoPadilla, car ignition and horn sounds by Han1, single cough sound by zippi1, group cough sounds by Leady, gas stove sound by WIM, water drop sound by junggle, pool splash sound by patchen, brute vocal by Xythe and vacuum sound by tweeterdj.