A Little Sunshine, Miss

How to use solar power to power a hand-held radio telescope or a simple solar voltage meter

By Dave Prochnow
August 16, 2007

Latest

Trump is taking away California’s right to set its own air pollution targets
Four computer monitors to seriously upgrade your home office
Century-old ship logs show how much ice the Arctic has lost
Explore the gauges, levers, and history of a 747's iconic cockpit
Trying to eat eco-friendly? These charts show how different diets could change the planet.
The key to curing the common cold could lurk within our own cells
So you want to try intermittent fasting. Here's how to do it.
Help people fix tech problems no matter where you are
Handy devices to cook your eggs quickly