Esther Landhuis is a biologist-turned-journalist who freelances in the San Francisco Bay Area. Her stories have appeared in NPR, Scientific American, Nature, Undark, Science News for Students, and other publications. She enjoys writing profiles and stories about surprise and hope. Follow her on Twitter @elandhuis.
Around the world, at least two billion people routinely consume insects. One anthropologist believes geography and colonization can explain why some populations are too squeamish to stomach such foods.