SortStack #1378 — 2030-03-18

By size · Order from shortest to longest.

1. A common garden ant 5 mm

   Ants can lift objects many times their own weight thanks to their tiny size and the physics of scale.

2. A tennis ball 6.7 cm

   Tennis balls are pressurised with gas and slowly go flat, which is why fresh cans hiss when opened.

3. A credit card 8.6 cm

   Every card's dimensions follow a global standard so it fits machines from Tokyo to Toronto.

4. Lake Baikal (length) 636 km

   The world's deepest lake holds about a fifth of all the planet's unfrozen fresh water.

5. The River Danube (length) 2.9K km

   It flows through more countries than any other river in the world, passing four national capitals on its way.

6. The Yellow River, China (length) 5.5K km

   Nicknamed 'China's Sorrow', its devastating floods have killed more people than perhaps any other natural feature.

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