It's true! In yet another fun at home science experiment from the Clark Planetarium, we recently learned that glow sticks contain phenyl oxalate ester and hydrogen peroxide. When mixed together ...

A typical light stick contains two chemicals: hydrogen peroxide and a phenyl oxalate ester. When these two substances are mixed, energy is released. That energy excites a suitable fluorescent dye ...

Aster wondered where they’d gotten the peroxide to work them, let alone the phenyl oxalate ester. “All you got to do is give one of them a shake and the stuff inside gets all mixed up,” said ...