SortStack #1273 — 2029-12-03

By size · Order from shortest to longest.

1. A ladybird beetle 1 cm

   A single ladybird can eat 5,000 aphids in its lifetime, making it a gardener's favourite predator.

2. A tournament chess pawn 3.7 cm

   Regulation sets fix the pawn's height relative to the squares so pieces never crowd the board.

3. A new wooden pencil 18 cm

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

4. The Channel Tunnel 50.5 km

   Trains run through three parallel tubes beneath the seabed, with a smaller service tunnel between them for safety.

5. New Zealand's South Island (length) 840 km

   It is home to fewer than two million people but more than ten times as many sheep.

6. The diameter of the Earth 12.7K km

   Despite feeling enormous, Earth is smoother than a billiard ball when you compare its bumps to its size.

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