The solar energy harvested by current solar panels comes entirely from the visible spectrum, which leaves quite a bit of the light spectrum untapped. But research into adding new materials (vanadium and titanium) to solar semiconductors could mean that in the future, our solar panels will also be able to capture some of the infrared spectrum and turn it into electricity.
- Pocket Solar
- Solar Power in Strange Places
- How to Run Your House on Solar Power
Disposing and storing coal ash is tricky, and it takes one small trigger to cause a catastrophe. HowStuffWork looks at coal ash and the environment.