Supercritical CO₂ is used as a 'green' solvent in decaffeinating coffee — it extracts caffeine without leaving residue.

Some butterflies have wings that reflect ultraviolet light.

The tomato was long believed to be poisonous in Europe because wealthy people died after eating it — they were actually poisoned by lead from pewter plates.

The refrigerator allowed long-term food storage.

The War of 1812 was fought between the United States and Great Britain.

Humans can survive weeks with minimal calories.

Strawberries aren't berries — but bananas, avocados, and cucumbers are, botanically speaking.

The Great Lakes were formed by glacial movement.

Competitive eaters train by stretching their stomachs with large quantities of water and low-calorie foods.