(Kelly presents in a laboratory.)The regular Coke sinks due to the 39 grams of this dense ingredient, virtually non-existent in the Diet Coke
And, in fact, a 12 
ounce can of Coke has more mass because of the 39 grams of... [DOC] [TLE] Sinking Soda Surprise - SICK Science - The Lab [PAR] Come to think of it, I'm not sure why we kept retrieving the cans, but we did.