SortStack #195 — 2026-12-21

By size · Order from shortest to longest.

1. A single poppy seed 1.3 mm

   It takes roughly 3,000 poppy seeds to make a single gram, which is why they scatter so easily off a bagel.

2. A new wooden pencil 18 cm

   A single pencil can draw a line roughly 56 kilometres long before the graphite runs out.

3. A banana 26 cm

   The banana you eat is a sterile clone; nearly all exported ones are a single variety called the Cavendish.

4. The English Channel (narrowest crossing) 33.8 km

   The first person to swim it, in 1875, took nearly 22 hours and slathered himself in porpoise grease for warmth.

5. Lake Geneva (length) 73 km

   Shared by Switzerland and France, its waters take over a decade to fully cycle through and renew.

6. Lake Baikal (length) 636 km

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

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