David Letterman, wearing a suit of 3400 Alka Seltzers is dipped into a tank of water - what must the studio have smelt like? Was this the origin of the Diet Coke and Mentos idea?
Now what happens if you put Alka-Seltzer into water when you’re in zero gravity? The answer is a couple of minutes into this informative video…
And to follow that, one of the best Diet Coke and Mentos experiments videos that I’ve seen:
