The Great Wall of China was built over multiple dynasties.

Coffee is the world's second most traded commodity after oil.

Fact #3608 · Food

Peanuts are not nuts — they're legumes, more closely related to beans.

Fact #3411 · Food

Chocolate was consumed as a bitter beverage by the Aztecs long before it was made into solid bars.

Fact #4306 · Food

Black pepper was once so valuable it was used as currency and to pay ransoms.

Fact #4308 · Food

The identification of vitamins advanced nutritional science.

Fact #1229 · Food

The Tulip Mania of the 1600s caused tulip bulbs to reach extreme prices in the Netherlands.

Fact #769 · Food

The number 0.999... (repeating) is mathematically equal to 1.

Fact #3460 · Food

Vanilla is the second most expensive spice in the world after saffron, because each flower must be hand-pollinated.

Fact #4301 · Food