When and how did green grapes get so big and plump and tight?

[Tamerlane]

@Sarabellum

And what will they be like in another 50 years? The size of plums, maybe? A decent snack might consist of 1 or 2 grapes?

I guess the larger they are, the better they sell?

When I was a little kid I coveted the head-sized strawberries on Land of the Lost. Heck yeah, I’d buy a plum-sized grape!