The 1883 eruption of Krakatoa created global atmospheric effects.

Architecture that uses passive solar heating, natural ventilation, and local materials is called vernacular architecture.

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

Humans can survive extreme cold longer than extreme heat.

Quinoa is technically a seed, not a grain, and is one of the few plant sources of complete protein.

The Pleistocene epoch included repeated glacial cycles.

MSG (monosodium glutamate) is naturally found in tomatoes, aged cheese, and soy sauce — and has no proven link to adverse reactions in controlled studies.

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

The average person breathes about 22,000 times per day.