Science of Survival: Dangerously Delicious

There are several thousand species of mushroom, but only a handful that will kill you. And the toxins found in poisonous mushrooms are some of the deadliest natural poisons on earth. Just seven milligrams—one quarter of a grain of rice—is enough to kill an adult. When you picked some mushrooms off the forest floor, you planned to make a nice risotto. But now you’re in the hospital, fighting for your life.