Slide the Mentos down to one end of the tube. Mark how far the Mentos reaches inside ... it develops even more pits and ridges as the sugar in the candy’s coating dissolves in the water of the soda.

For air travelers who have popped one of the the trackable, Mentos candy-shaped AirTags in their luggage – but still struggle to get help when suitcases are misplaced – this software update is ...