When you're traveling and away from a reliable power source, conserving your laptop's battery is of the utmost importance. And knowing which of your USB accessories draws the most juice thanks to this simple $31 power meter—whether it's a wireless adapter, an external drive, or even your phone—will help you max out…
Microsoft Hohm, the energy usage-tracking web app, just got a whole lot easier to use. Microsoft and Blue Line Innovation have created a power meter reader so anyone can use Microsoft Hohm to see exactly how much money they're wasting.
Google PowerMeter, an online widget that monitors your home's power usage in real time, is one of those ideas that really should've caught on by now. Well, it's starting to!