ROLL UP in a BYD Seal to the leafy entrance of a small housing block in Walthamstow, in east London, and the first thing that strikes you is the quiet. The stylish Chinese saloon is all electric, so ...

FOR MORE than a decade the Tamaya power station in the Atacama desert in northern Chile powered its local region using diesel. Today a shimmering array of solar panels stands in place of the dirty ...