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Explore Bicycle Competition, Competition Winner and more!

Bud of Tribulus sp. at its final stages of development. M. Reza Dadpour, It's so beautiful. But it's also known as devil's thorn or goathead - out of that bud will come two gnarly thorns. We dealt with the thorns of this creature a lot at Pine Ridge. They will puncture a bicycle tire or your thin soled shoes (I wore moccasins) pretty easily.

International Bicycle Design Competition 2013 Winners, Part 1 - Core77 Lights are key to urban biking. Not sure wind is better than solar but still a respectable engineering solution.