Small steps towards big savings
- A screen saver is not necessarily an energy saver.
The average desktop computer consumes between 60 to 250 watts a day. Compared with a machine left on all day, a computer that is in use four hours a day and turned off the rest of the time would save you about $70 a year, not to mention the enormous reduction on CO2 emissions.
So make it a habit to turn off your monitor when you leave your desk and shut down your computer when you're leaving for the day.
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Electricity turns garbage into graphene
LONDON - Science doesn’t usually take after fairy tales. But Rumpelstiltskin, the magical imp who spun straw into gold, would be impressed with the latest chemical wizardry. Researchers at Rice University report today in Nature that they can zap virtually any source of solid carbon, from food scraps to old car tires, and turn it into graphene—sheets of carbon atoms prized for applications ranging from high-strength plastic to flexible electronics. Current techniques yield tiny quantities of picture-perfect graphene or up to tons of less prized graphene chunks; the new method already produces grams per day of near-pristine graphene in the…
