SortStack #2575 — 2033-06-27
By size · Order from shortest to longest.
- A single poppy seed 1.3 mm
It takes roughly 3,000 poppy seeds to make a single gram, which is why they scatter so easily off a bagel.
- 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.
- Mount Everest 8.8 km
Its summit is made of marine limestone, lifted from an ancient seabed, so the top of the world was once underwater.
- A marathon course 42.2 km
The odd distance was fixed in 1908 so the London race could start at Windsor Castle and finish before the royal box.
- The Grand Canyon (length) 446 km
The Colorado River carved it over millions of years, exposing rock layers nearly two billion years old at the bottom.
- The Yellow River, China (length) 5.5K km
Nicknamed 'China's Sorrow', its devastating floods have killed more people than perhaps any other natural feature.