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 ...

COLUMBUS, Ohio (WCMH) — The annual COSI Science Festival is coming up from May 3 to 6 and NBC4 Today anchor Monica Day got a preview of a crowd favorite experiment: “Elephant Toothpaste” with Kristy ...

STEP 3: Mix 3 tablespoons of warm water with 1 tablespoon of dry yeast. STEP 4: Pour the warm water and dry yeast into the bottle and observe. The yeast acts as a catalyst, quickly removing the oxygen ...