In preparation for Earth Hour, here is some maths on the carbon emission of candles and light-bulbs. Each hour a small candle burns about 2 1/2 grams of candlewax, containing over 2 grams of Carbon, producing 1 candlepower of light and 7 grams of CO2. So 40 candles will produce about 280 grams of CO2 each hour. The much maligned and soon to be outlawed 40W incandescent bulb which produces...
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