Few people have heard of it, yet many consider John Blankenbaker's KENBAK-1 to be the first commercial personal computer.

Koss introduced these headphones over 40 years ago, and they remain affordable favorites to this day.

Your Very Own $500 Electric Wind Turbine


Wind power is very much in vogue these days. The Southwest Windpower Air-X Land is a 400W wind generator that retails for less than $500. It features a 46" carbon fibre rotor that is microprocessor controlled to ensure that it slows automatically in high winds or when your battery system is fully charged (batteries and a power inverter aren't included).

I know that 400W isn't much power, but it's definitely enough to power a few lights in a remote cabin, especially if you install high capacity batteries and only visit on weekends. Besides, the price tag is low enough that it might encourage a few backyard experimenters to take the plunge and find out why so many people are excited about wind turbines. Oh, and don't forget to budget an extra few hundred dollars for a tower to mount your snazzy new turbine.

The Air-X Land Wind Turbine (via Treehugger)


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