Are you a Mac aficionado who just so happens to think that searching for alternative energy sources - i.e. the sun - is the only way that us humans can hope to extend our stay in this big bad galaxy? If so, then you better hope you have US$ 180 to spare. According to Treehugger.com, that's the estimated cost of the home-made, portable solar kit that Pat, a blogger from Will Blog For Experience, used to power his MacBook. Here's what Pat himself said:

This kit weighs about 2 lbs, costs $180, and will power my Macbook for 1.75 hours (1.83ghz, browsing the web and checking email via Airport Extreme, bluetooth off, screen brightness about 70%) with a little more than 5 hours of good sun.