Month: January 2009

DIY: Bike fenders

DIY: Bike fenders

So you have a budget of about $0 and you don’t want mud on your jacket, what do you do? Well, by using an old corrugated plastic sign and some zip ties you can make a really simple bike fender. OK, it may not be the prettiest fender I’ve seen, but it still has a […]

Amazing light phenomena

Amazing light phenomena

Environmental Graffiti has a roundup of amazing light phenomena photos, with nice pithy explanations of the science. Via Mr.Reid The collision of electronically charged particles in the earth’s upper atmosphere often creates magnificent light displays over the polar regions. The colour depends on the elemental content of the particles – most auroras appear green or […]