New discoveries from several archaeological sites in North and South America suggest that ancient people first arrived in the New World much earlier than scientists once thought.
New discoveries from several archaeological sites in North and South America suggest that ancient people first arrived in the New World much earlier than scientists once thought.
I thought this was obvious: avocado seeds are large because they were eaten by giant sloths. It would surely be much more difficult for an avocado tree to reproduce without the involvement of an animal, and giant sloths are not around anymore, so at some point humans must have taken over from the giant sloths, so there was probably some place where humans and giant sloths lived at the same time.