Without any intervention from politicians or environmentalists societies that progress have been using m ore fuels that have less carbon with higher energy density (1 kg of wood fuels a light bulb for 1 day, 1 kg of coal fuels a light bulb for 4 days, 1 kg of crude oil for 5 days, 1kg of methane for 6 days and 1 kg of uranium for over 140 years).

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That night she fell asleep in her car without any answers but the following day, the proverbial light bulb went off.

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They can happen in the middle of the day, night, or even during a traffic jam, the "aha" or "light bulb" moments in our lives--those thoughts of clear brilliance where the proverbial light bulb appears over our head.

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His "penny-pinching tips, " for example, encourage readers to make late-day visits to bakeries for free carbs and bring backpacks to friends' places to nab an occasional light bulb.

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