The set time that will occur quite soon - when the world's apples become poisonous and people tragically die one by one. This time was originally based on a bestselling movie, but then after being researched turned out to be something that could actually occur in the next few years. So beware of the apples around you.
"An apple a day keeps the doctors away... or does it?"
Person 1: Eats apple. Dies.
Person 2: Eats apple. Dies. Therefore the world will become: Appleless