video://www.metacafe.com/watch/785385/usb_laser_air_purifier_lamp/
Check out this cool DIY on how to make your own USB Laser air purifier. I guess lasers can clean the air pretty good huh?
I’d like to see this DIY with green lasers though, maybe that will be even more powerful.
Laser can refresh your air by kill the bad bacteria and fungus in the air.You can make a cool lamp too. All with the usb power.