Smart rubbish bins in Wuzhen, Zhejiang province can tell cleaners their conditions via automatic doors and sensors. [Photo by Xiang Wenjian/chinadaily.com.cn]

Ever been spoken to by a rubbish bin? In Wuzhen you will be-with automatic doors and sensors which alert cleaners that they are full, the rubbish bins thank you for taking care of the environment every time you use them. On top of that, they are solar-powered.