SortStack #643 — 2028-03-13

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 skateboard 79 cm

   The kicktail that makes tricks possible was a 1970s accident that turned skating into an aerial sport.

3. A sperm whale 16 m

   Its head holds the largest brain of any animal that has ever lived, weighing about as much as a small person.

4. The Eiffel Tower 330 m

   It grows up to 15 centimetres taller in summer because the iron expands in the heat.

5. Merdeka 118, Kuala Lumpur 679 m

   The second-tallest building on Earth, its faceted glass facade echoes patterns from traditional Malaysian crafts.

6. Mount Olympus, Greece 2.9 km

   Mythical home of the Greek gods, its peak was not officially climbed by humans until 1913.

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