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How much coal does a light bulb need to run for a year?

Kategorie: Wissen und Wissenschaft
Kanal: BrainStuff
Datum: 9. April 2012, 17:05
Stufe: B1-B2 (Mittelstufe)

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How much coal do you need to run a 100-watt light bulb 24 hours a day for a year? The answer might surprised. Tune in and find out in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers