Find out how chemists have improved the stuff below every athlete’s shoes — artificial turf. Part one of four episodes celebrating National Chemistry Week.

Intro theme and various sound effects by Adam Dylewski; music by Kevin MacLeod (incompetech.com); Creative Commons licensed audio from freesound.iua.upf.edu includes sounds by unclesigmund, thanvannispen, Freesound, acclivity, Sruddi1, scarbelly25 and reinsamba.