SortStack #2036 — 2032-01-05

By size · Order from shortest to longest.

1. A single E. coli bacterium 2 µm

   About 2 micrometres long, E. coli divides every 20 minutes, so one cell can become billions inside a single day.

2. A roasted coffee bean 8.5 mm

   A coffee 'bean' is actually the seed of a cherry-like fruit that grows on shrubs near the equator.

3. 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.

4. A London double-decker bus 10.9 m

   The classic Routemaster's open rear platform let passengers hop on and off between stops, a hallmark of old London.

5. Mount Kilimanjaro, Tanzania 5.9 km

   You can walk from tropical jungle to arctic glaciers on its slopes, passing through five climate zones in days.

6. The Kiel Canal, Germany 98 km

   The world's busiest artificial waterway, it lets ships skip the long, stormy voyage around Denmark.

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