The Deadliest Poisons in History (And Why People Stopped Using Them)

Once people figured out they could kill each other with special substances instead of sharp sticks, the proverbial poison cookie was born. However, there are only so many times you can use the same trick. As people caught on to how poisons worked, and moved them to the forefront of investigations, certain poisons fell… » 9/13/12 9:00am 9/13/12 9:00am

This rat uses plant poison to make weapons that kill lions

The African Crested Rat has figured out a way to kill off the jackals and lions who try to prey on it. This little critter is 21 inches from head to tail, but no one and nothing can afford to take a bite out of it. Between its specially adapted physiology and peculiar behavior, this rat can take out pretty much any… » 8/04/11 7:00am 8/04/11 7:00am

Ten foods in your kitchen that contain gruesome poisons

As part of io9's ongoing attempts to make you a hollow, timid shell of the person you used to be, we try to illuminate all the ways the world is trying to kill you. We've gone over death by asteroid, vampire, and virus, and have finally gotten to death by grocery list. Find out the toxic elements in all your favorite… » 6/10/11 10:00am 6/10/11 10:00am