sand

Negative friction sees sand flow uphill

Why walking on beach sand is more tiring than walking on pavement

Baby turtles wait in the nest for their siblings so they can all head out to sea together

Sandy-dandy invention shows its strength

Do we think enough about sand?

Sand dunes play a team game

Hiroshima’s sands contain atomic bomb glass

Sand, bubbling through sand

Frosted gullies of Mars

The hidden social and environmental costs of sand mining