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How Solar Water Heaters Work
science.howstuffworks.com/environmental/green-tech/sustainable/solar-water-heater.htm
Solar water heaters could help cut your utility bills. Visit HowStuffWorks to learn about solar water heaters.
How the Tesla Powerwall Works
science.howstuffworks.com/environmental/energy/tesla-powerwall.htm
There's no question that people are interested in solar energy. The problem has been how to store it. Could the much-hyped Powerwall home battery change that scenario?
10 Holiday Controversies
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There's something to offend everyone in the season of goodwill. Learn about 10 holiday controversies at HowStuffWorks.