Hydro, Solar, Wind, and Biomass

Hydro, Solar, Wind, and Biomass

Hydroelectricity does have a number of advantages. In a hydrodam, you generate electricity from a non-depletable resource, water. As long as the sun shines, water will evaporate into the atmosphere, and eventually come down as rain. Gravity will bring that water to the ocean. If you impound the water behind the dam, and then release…

TRANSPARENT Solar Panels?!

TRANSPARENT Solar Panels?!

Hi, this is Kate from MinuteEarth. Solar panels pretty much only come in one color: dark. That’s because they use dark sheets of silicon crystals to absorb the sun’s rays, then turn them into electrical energy. And solar panels are becoming so cheap and so efficient that soon, whole cities could run on sunlight…except that…