Going Green
Solar Powered Calculator
You don’t have to put solar panels on the roof to go solar! I’ve used a sun-powered calculator for as long as I can remember. No batteries to change out, no charging cord to keep […]
solar
Going Green
Solar Water Heating
In the past, solar energy has been prohibitively expensive, with payback over 20 years for most applications. Photovoltaics are still quite expensive, while parabolic collectors and other concentrating means are not much better. The machinery […]
Going Green
Solar Powered Lantern
The power goes out where I live half a dozen times each year – violent thunderstorms, strong winds, ice storms, and sometimes even the tail end of a hurricane. At least once each year the […]
Going Green
Solar Backpack
Don’t have anywhere to charge up your smartphone when you’re at school? Get a solar backpack. They have a small solar panel built into the backpack itself, to charge your electronics whenever you’re outside ~ […]
Going Green
Solar Helicopter on Mars
NASA made the news over the weekend when their latest Mars rover did a short helicopter-powered flight. It’s the first powered flight off the surface of a planet other than Earth. What makes it even […]