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Tag: sand

The Amazing Life of Sand

KQED Science | November 4, 2014 | 0 Comments

The Amazing Life of Sand

There’s a story in every grain of sand: tales of life and death, fire and water. If you scooped up a handful of sand from every beach, you'd have a history of the world sifting through your fingers. From mountain boulders to the shells of tiny ocean creatures, follow the journey that sand takes through thousands of years across entire continents to wind up stuck between your toes.

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Soy and Dry Ice Among San Francisco’s New Tricks to Banish City Graffiti

KQED Science | November 14, 2013 | 1 Comment

Soy and Dry Ice Among San Francisco’s New Tricks to Banish City Graffiti

San Francisco cleans up a lot of graffiti every year. In the past, the city has used standard industrial solvents for this task, but now, workers will be cleaning up with non-toxic materials, in an effort to protect people and reduce toxic runoff.

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California’s Looming Sand-and-Gravel Crunch

KQED Science | June 6, 2013 | 0 Comments

California’s Looming Sand-and-Gravel Crunch

A new map of sand and gravel resources from government geologists is alerting us that California cities and regions must keep thinking locally to keep prospering.

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