Woah I had no idea…I always just assumed that the size of the grains decreased proportionally with the retreat of the polar rice caps at the end of the last rice age.
Indeed, but a larger factor was the plate tectonics which over the millennia become smaller and more fragmented, resulting in smaller plates and reduced food portion sizes.
Woah I had no idea…I always just assumed that the size of the grains decreased proportionally with the retreat of the polar rice caps at the end of the last rice age.
Indeed, but a larger factor was the plate tectonics which over the millennia become smaller and more fragmented, resulting in smaller plates and reduced food portion sizes.