Why archaeologists are arguing about sweet potatoes

At some point, sweet potatoes crossed the Pacific. This much we know. As for the rest—How? When? Why?—we’re just not sure. Or, to be more clear, some people are sure they’re sure, and others disagree. Sweet potatoes have been at the center of a massive archaeological debate for many decades now, and a new paper has only stoked the flames.
Read more: https://www.popsci.com/sweet-potatoes-archaeology?source=Snapzu