SortStack #2561 — 2033-06-13

By size · Order from shortest to longest.

1. A ladybird beetle 1 cm

   A single ladybird can eat 5,000 aphids in its lifetime, making it a gardener's favourite predator.

2. A classic incandescent light bulb 11 cm

   Its glowing filament reaches around 2,500 degrees Celsius, yet wastes most of its energy as heat, not light.

3. The cruising altitude of Concorde 18 km

   Concorde flew so high that passengers could see the curvature of the Earth and the dark of space above.

4. The River Thames (length) 346 km

   It was once so polluted that 1858's 'Great Stink' forced Parliament to finally build London's sewers.

5. Great Britain, Land's End to John o' Groats 970 km

   The classic end-to-end journey covers roughly 1,400 kilometres by road, a favourite challenge for cyclists and walkers.

6. Chile (length) 4.4K km

   So long and thin it spans 38 degrees of latitude, from the driest desert on Earth to icy glaciers in the south.

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