Among them are some modern things like a solar powered lamp and even a throne made of weapons created by an African artist.

其中包括太阳能灯等现代物品，甚至还有一位非洲艺术家用武器制作的王座。

youdao

It was followed by Lille in the same year and Amsterdam two years later, where a much more efficient oil-powered lamp was developed.

BBC: The myth of the eight-hour sleep

But some of our favorite designs are the ones that do social good, like Olafur Eliasson's Little Sun -- a portable solar-powered lamp that's being distributed to people who live without electricity worldwide.

ENGADGET: Inhabitat's Week in Green: Eindhoven's Evoluon Center, folding compact cars and the best of 3D printing

Although each step produces only enough electricity to keep an LED-powered street lamp lit for 30 seconds, Kemball-Cook says that the tiles are a real-world "crowdsourcing" application, harnessing small contributions from a large number of individuals.

CNN: Green sidewalk makes electricity -- one footstep at a time