SortStack #1266 — 2029-11-26

By size · Order from shortest to longest.

1. A grain of rice 7 mm

   Rice feeds more than half the planet, and a single plant can yield thousands of these grains.

2. A standard house brick 22.5 cm

   Fired clay bricks have been made the same basic way for over 5,000 years, outlasting the empires that baked them.

3. An average adult human 1.8 m

   Humans have grown roughly 10 centimetres taller on average over the past 150 years thanks to better nutrition.

4. A one-person kayak 3.4 m

   The kayak was invented by Arctic peoples thousands of years ago, sealed with animal skin to stay watertight.

5. Veryovkina Cave (depth) 2.2 km

   The deepest known cave on Earth, explorers need weeks underground to reach its bottom and climb back out.

6. Great Britain, Land's End to John o' Groats 970 km

   The classic end-to-end journey covers roughly 1,400 kilometres by road, a favourite challenge for cyclists and walkers.

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