The first time I came here, the village of the Botswana tribe looked like an African refugee camp. The homes were made of clay, just sturdy enough for basic shelter, and the people wandering around looked gaunt, with skin stretched tight over their bones. They had barely any livestock, making me question if they were even true nomads.

“It’s completely different from when we last visited,” I remarked.

Chloe nodded, agreeing. “Yes, there’s a lot more livestock around, and the villagers look much healthier and happier.”

Livestock like cows, pigs, and sheep don’t multiply as quickly as rabbits, so the …