China’s environmental woes inspire art

Exhibition by one of China’s most well-known artists uses stark imagery to shed light on environment issues

Global Fairtrade sales reach £4.4bn following 15% growth during 2013

UK continues as largest international market for Fairtrade products with total reaching £1.8bn

Fashion meets renewable energy – clothes that charge your smartphone

From fibres that convert sunlight into electrical energy, to uploading your kinetic energy to a green energy bank, the worlds of fashion and technology are merging

• How can technology advance sustainability in fashion? – live online chat on Tuesday 5 August, 1pm BST

Brian Cox: scientists giving false sense of debate on climate change

‘Research presented as overly precise climate predictions rather than best advice is manipulated by nonsensical sceptics’

10 of Tokyo’s best high-end restaurants

Only in Tokyo can you sample the finest sashimi from a skyscraper, try tofu beside a carp pond or taste tempura under an oversized fedora. Robbie Swinnerton picks the best upmarket restaurants

• As featured in our Tokyo city guide