Why the hottest chilies grow in the wettest places

What makes some chili peppers burn while others are mild? Biologists already knew that hot peppers evolved their fiery flavor to drive away a seed-eating fungus. So why aren't the mild chilies prey to this fungus? A new study suggests that hot versus mild depends on the amount of water where the chilies grow. » 12/21/11 8:30am 12/21/11 8:30am