Don't Touch That!: The Book of Gross, Poisonous, and Downright Icky Plants and Critters

You've probably heard the warning about poison ivy: "Leaves of three, leave it be." If only it were that simple! Do you know that a plant that has been dead for years can still cause a rash, or that if you burn poison ivy you can get a skin reaction just by walking through the smoke?

And that's just one species to avoid--if you're not careful, you can also run into poison oak, poison sumac, trumpet creeper, giant hogweed, stinging nettle, and all sorts of cacti. There are also things that...