The recommended daily allowance (RDA) for vitamins was established during WWII to prevent deficiencies in soldiers.

High-altitude mountaineers can lose up to a pound of weight per day on extreme climbs due to calorie burn and dehydration.

There are creatures that can survive without oxygen.

Honey will never spoil if kept sealed — archaeologists have eaten 3,000-year-old honey from Egyptian tombs.

You are more likely to die from extreme heat than extreme cold.

P vs NP is one of the greatest unsolved problems in mathematics — no one has proved whether hard problems have shortcuts.

Pineapple contains bromelain, an enzyme that breaks down proteins — it will literally digest your mouth if you eat too much.

Popcorn has been consumed in the Americas for at least 5,600 years based on archaeological finds.

The word 'salary' comes from the Latin 'salarium,' referring to payments made to Roman soldiers in salt.