Walter Lewis
Holding his half-full gourd of “chicha,” Walter Lewis smiles, wishing he didn’t have to drink another drop. It tastes so sour, like a combination of yogurt, warm beer and mashed potatoes. But the headman — the apu of the Achuar Jivura village in the Peruvian Amazon jungle — is looking him right in the eye. To refuse this friendship ceremony drink would be an...