Cleaning solar panels often not worth the cost, engineers find

Don't hire someone to wash your dirty solar panels. That's the conclusion of a study recently conducted by a team of engineers at the University of California, San Diego. Their findings were published in the July 25 online ...

Grocery delivery service is greener than driving to the store

At the end of a long day, it can be more convenient to order your groceries online while sitting on the living room couch instead of making a late-night run to the store. New research shows it's also much more environmentally ...

Crowds create Wikipedia-style maps of the world

When Benjamin Gleitzman moved from New York to the San Francisco Bay area, he used a talking turn-by-turn driving app to guide him across the country. In the middle of Wyoming, the voice told him to turn left where there ...

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