Fun fact#990
Sand dunes make noise
Some dunes boom, hum or sing when sand avalanches down their faces, producing a low note that can be heard several kilometres away.
506 fun facts, part 6
6 fun facts on this page. It covers Sahara and Gobi, Italy, Siberia and the Arctic, Indian Ocean, USA, Poles. Page 6 of 6.
Page 6 of 6
6 fun facts on this page. It covers Sahara and Gobi, Italy, Siberia and the Arctic, Indian Ocean, USA, Poles. Page 6 of 6.
Entries on this page
Fun fact#991
Rome has a key hole with three countries
Look through the keyhole on the Aventine Hill and you see a garden in Italy, a dome in Vatican City and an avenue owned by the Order of Malta.
Fun fact#994
Boiling water freezes in Arctic air
At around minus 40 degrees, throwing boiling water into the air turns it into a cloud of ice crystals almost instantly, because the hot droplets are tiny and evaporate fast.
Fun fact#996
Whale sharks are counted by their spots
Researchers identify individual whale sharks by their spot patterns using software originally written to map stars in the night sky.
Fun fact#997
Some trees are older than writing
Great Basin bristlecone pines in the White Mountains have been growing for more than 4,800 years, predating the earliest known written records.
Fun fact#1000
Sunsets last longer near the poles
At high latitudes the sun meets the horizon at a shallow angle, so twilight can stretch for hours instead of minutes.
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