Ford has recalled close to one million vehicles around the world to replace defective Takata airbag inflators. The Detroit Free Press reports that the vehicles have been recalled due to a risk of flying shrapnel caused by exploding airbag inflators. Takata used the chemical, ammonium nitrate, to create an explosion to inflate airbags. However, it can deteriorate over time due to heat and humidity. When the ammonium nitrate has deteriorated, it will explode with too much force and blow apart the metal canister designed to contain the explosion. Hundreds of people have been injured by the shrapnel from these airbags and at least twenty-three people have been killed worldwide.