Ever wonder just what a light bulb cost the earth? Well, to energize four 100Watt bulbs for 6 hours/day for 1 year it cost 714 pounds of coal. So, 4 bulbs, 6 hours for 100 million homes cost us: 71.4B lbs of coal, leaving behind:

• Sulfur Dioxide =  250,000 Tons - Main cause of acid rain
• Nitrogen Oxides 255,000 Tons - Causes smog and acid rain
• Carbon Dioxide 92,600,000 Tons - Greenhouse gas responsible for global warming

Not to mention the wake of destruction that the coal mining and distribution process leaves in its path.

Perspective References - US Population by State & by City

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