GRAND RAPIDS, Mich. — Making fresh bread at home is becoming quite the trend lately, but today we will be using yeast to make elephant toothpaste! We will learn what a catalyst is and what it does in ...

SIOUX CITY (KTIV) - Gather your supplies! In this episode we will learn about chemical catalysts...or when something is used to speed up a chemical reaction. Over a long period of time, peroxide will ...