Vesuvius last major eruption was in 1944 — it's overdue for another, which threatens 3 million nearby residents.

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

The açaí berry must be processed within 24 hours of picking — it rapidly ferments after harvest.

The law of conservation of energy states that energy cannot be created or destroyed, only transformed.

The process of freeze-drying preserves food flavor and nutrients better than most other preservation methods.

Pineapples take about two years to grow to full size.

Triceratops had a large bony frill that may have helped with defense or display.

Galileo was threatened with torture for his scientific beliefs.

The refrigerator allowed long-term food storage.