SortStack #1742 — 2031-03-17

By size · Order from shortest to longest.

1. A hen's egg 5.5 cm

   An eggshell has up to 17,000 tiny pores that let the developing chick breathe through the surface.

2. A concert grand piano 2.7 m

   A grand piano's strings pull with a combined tension of around 20 tonnes, held by a single cast-iron frame.

3. A reticulated python 6.6 m

   The world's longest snake, it kills by constriction, tightening with every breath its prey exhales.

4. A yellow school bus 13.7 m

   That specific shade, 'school bus yellow', was chosen in 1939 because it stays visible in dim dawn light.

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. The Pan-American Highway (length) 30K km

   It runs almost pole to pole but for one gap: the roadless Darien jungle between Panama and Colombia.

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