electricity
How Do Fuel Cells Work?
In recent years, you may have seen news items about fuel cells and the coming “hydrogen economy” and wondered what exactly is a fuel cell? A fuel cell is a form of a reactor where we can create electricity through an electrochemical reaction of hydrogen and oxygen. The only by-products of a hydrogen-fueled fuel cell are pure water (H2O) and heat.
Our Sun - The Ultimate Energy Source
At 93 million miles from Earth, our sun is a middling star that provides nearly all the energy on Earth. The only energy sources we have on Earth which do not come from the sun are the tides caused by the moon's gravity, radioactive materials and geothermal energy. The sun provides everything else. All the energy embodied in fossil fuels and biomass is actually the sun's energy stored as carbon.
Simple, Low-Cost First Steps for Home Energy Efficiency
Here are a few easy things you can do to cut your home energy use. Convince the entire family to follow these steps, and you may find that it doesn't take any time or cost any money to improve your home's energy efficiency.
Electricity
