If you think eating pepper is very agonizing to do especially if you have a low tolerance to hot, spicy things, you probably shouldn't go near this cactus-like plant. Its active ingredient is 10,000 times hotter than the world's hottest pepper.
However, what if this chemical has the property of blocking out your sense of pain? And it can do this without affecting other nerves in your system. So it effectively targets only the nerves that react to pain. That could make this chemical possibly one of the most potent painkillers which can be used in a variety of situations.
Learn more about it from The Wired.
(Photo courtesy of: Wikimedia Commons)