The windblades come to existence by cutting the bamboos into halves. The ends of the bamboos are cut angularly so the lamp lights downwards to the passer-bys and its motion can be seen from afar.

将一节竹子劈去一半就成了风叶，把竹子的末端做成向下的倾角，这样灯光就能向下照射为路人照明，也能从远处看到。

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For renewable energy on a smaller scale, a graduate student in Israel developed a prototype for an elegant rocking chair called Otarky that produces energy from its rocking motion and can be used to charge devices and power a lamp.

ENGADGET: Inhabitat's Week in Green: GPS shoes, shape-shifting bicycle and a wheelchair helicopter