Most Delicious PoisonA deadly secret lurks within our kitchens, medicine cabinets and gardens. Scratch beneath the surface of a coffee bean, a red pepper flake or an apple seed, and we find a bevy of strange chemicals. We use these to greet our days (caffeine), titillate our tongues (capsaicin) and even kill our enemies (cyanide). But what is the reason plants and fungi produce such chemicals? And how did we come to use and abuse them? Based on cutting edge science in the