SortStack #2190 — 2032-06-07

By size · Order from shortest to longest.

1. The width of a human hair 0.1 mm

   Hair width is so consistent it was once a unit of precision; forensic labs still match hairs to within fractions of this.

2. A standard paperclip 3.2 cm

   The familiar looped design, called the Gem clip, was never patented and has barely changed in over a century.

3. A wooden utility pole 18.5 m

   Most are pressure-treated with preservatives so they can stand outdoors for 40 years or more without rotting.

4. The CN Tower, Toronto 553 m

   Its glass floor can hold the weight of dozens of moose, yet many visitors still cannot bear to step on it.

5. The Millau Viaduct, France 2.5 km

   The tallest bridge in the world, its deck sometimes sits above the clouds that fill the valley below.

6. Aconcagua, Argentina 7 km

   The highest peak outside Asia, it can be hiked to the summit without ropes, yet thin air still kills climbers.

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