SortStack #3037 — 2034-10-02

By size · Order from shortest to longest.

1. A sesame seed 3 mm

   Sesame is one of the oldest oilseed crops, cultivated for more than 3,000 years across Africa and Asia.

2. A skateboard 79 cm

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

3. A great white shark 5.2 m

   Great whites can detect a single drop of blood diluted in 100 litres of water from hundreds of metres away.

4. The Kiel Canal, Germany 98 km

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

5. 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.

6. The Pan-American Highway (length) 30K km

   It runs almost pole to pole but for one gap: the roadless Darien jungle between Panama and Colombia.

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