Dr Tim Doherty, School of Life and Environmental Sciences, the University of Sydney. Photographed here with a sand goanna in Mallee Cliffs, NSW, Australia.

For now, let's focus on that last part. While there is a lot of casual advice on how to use sand in your yard, it should only be done sparingly, and only when you’re using the right kind of sand.

Infinite Secrets homepage. For ages 12 and older. How many grains of sand would it take to fill the universe? This is a problem that the Greek mathematician Archimedes tried to solve in the third ...

Sand is a loose granular material blanketing the beaches, riverbeds and deserts of the world. Composed of different materials that vary depending on location, sand comes in an array of colors ...

SPRUCE PINE, N.C. — Rob Hamrick could sell sand to the desert. He has, in fact, shipped 4,000 tons of it from a tiny community tucked in the Blue Ridge Mountains to an exclusive golf course in ...