The schools we attend, the buildings we work in, the cars we drive, and the appliances we use in our homes all are powered by some form of energy technology. When we use less energy that is based on fossil fuel, we emit fewer greenhouse gases into the atmosphere and contribute to lessening global warming. Also, the less energy we use, the more money we save.
Millions of years ago, Nature created fossil fuel — oil, natural gas, and coal — over the course of thousands of years. Since then they have been stored in the ground. We’re using up these stores when we burn fossil fuels for energy. Eventually they will be used up.
When so-called “renewable” resources – solar, wind, hydropower, biofuels, and geothermal – are used for energy, they’re not depleted because every day the sun shines, the wind blows, water falls, and plants grow. As long as there is a planet Earth, we’ll have these resources to use as energy.
Besides renewable energy resources, many new technologies exist that reduce the impact we have on the global climate. Technologies that are energy-efficient accomplish their functions using less energy.