sand

The United Nations Environment Program is warning that we are facing a "sand crisis" unless we put limits on and start regulating the extraction of sand.

Sands of Time

It's the second most used resource worldwide after water — and we're blowing through it.

The World Is Running Out of Sand, Scientists Lament

Researchers have found evidence of gigantic waves of sand, often referred to as "megaripples," slowly moving around on the surface of Mars.

sand

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