Australia is the most isolated continent.

Australia is the most isolated continent.

Although native Africans domesticated some plants in the Sahel and in Ethiopia and in tropical West Africa, they acquired valuable domestic animals only later, from the north.

History followed different courses for different peoples because of differences among peoples' environments, not because of biological differences among peoples themselves

Perhaps our greatest distinction as a species is our capacity, unique among animals, to make counter-evolutionary choices.

The single most important problem is our misguided focus on identifying the single most important problem!

Eurasia ended up with the most domesticated animal species in part because it's the world's largest land mass and offered the most wild species to begin with.