What’s the largest desert in the world? (Hint: It’s not the Sahara)
They cover more than one-fifth of the planet and are on every continent
Tag: Sahara desert
The Sahara swings between ‘lush’ and ‘desert’ every 20,000 years, in sync with the Earth’s tilt
It will be another 10,000 years before the Sahara ought to turn into a savannah.
EDITOR'S PICKS
What are the strong chemical bonds?
They really tie the room together.
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