Antarctica holds most of the world's fresh water, though it is locked away in ice.

The longer version

Snow that falls in the interior never fully melts, so each year adds a thin layer on top of the last. Over long spans these layers compress into dense ice, trapping air bubbles from the past. The sheet becomes thick enough in places to bury whole mountain ranges. Because the water is frozen, it stays out of the oceans and out of reach for everyday use.

Fresh water means water with little dissolved salt, and frozen precipitation qualifies. If the ice were to melt, sea levels worldwide would rise substantially, which is why scientists watch its mass closely. For now the store stays locked in solid form, slowly flowing toward the coast.

Where this entry sits

These facts wander across maps, borders, deserts, rivers, mountains, and the extreme corners of the natural world. Each one is short and self-contained, offering a small surprise about places you may never visit rather than anything you actually need. The full list sits on the Geography page, where every entry is listed in order.