Achieving a system cost of $0.65/W through the secondary market and do-it-yourself assembly demonstrates a viable pathway for US plug-in solar to provide immediate utility bill relief to renters and ...
The best smart thermostats we've tested can control your home's heating and cooling with your phone or voice—and might help you save on energy costs.
IEEE Spectrum on MSN

A new way to spray paint color

Dial up hues with this Arduino-powered, on-demand spray-can mixer ...