SortStack #2827 — 2034-03-06

By size · Order from shortest to longest.

1. A human red blood cell 8 µm

   Your body makes around 2 million of them every second to replace the ones that wear out after roughly 120 days.

2. 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.

3. A Bengal tiger (body length) 2.1 m

   A tiger's roar can be heard up to three kilometres away and carries frequencies low enough to paralyse prey with fear.

4. A reticulated python 6.6 m

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

5. The Gateway Arch, St. Louis 195 m

   Its elegant curve is a catenary, the exact shape a hanging chain makes, flipped upside down for strength.

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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