SortStack #1791 — 2031-05-05

By size · Order from shortest to longest.

1. A house dust mite 0.3 mm

   Millions live in the average mattress, feasting on flakes of dead skin, yet they are too small for the naked eye to see.

2. A grain of rice 7 mm

   Rice feeds more than half the planet, and a single plant can yield thousands of these grains.

3. A red kangaroo (standing) 1.5 m

   Kangaroos cannot walk backwards, a trait so iconic it earned them a spot on Australia's coat of arms.

4. Angel Falls, Venezuela 979 m

   The world's tallest waterfall is so high the water often atomises into mist before it ever reaches the ground.

5. The island of Crete (length) 260 km

   Home to Europe's oldest known city, Crete's Minoan palaces had running water and flushing toilets 3,500 years ago.

6. The River Danube (length) 2.9K km

   It flows through more countries than any other river in the world, passing four national capitals on its way.

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