Cities are home to 55 per cent of the world’s population, all jammed together cheek-by-jowl. Little wonder, then, that cities are being hit hardest by COVID-19: an estimated 90 per cent of...

Travelling up to ten times further than the average passenger vehicle, urban buses are a significant source of pollution, impacting local air quality and global carbon emissions. By 2030, urban bus activity...

Oslo's leftist city government issued its first "climate budget" on Wednesday aiming to halve greenhouse gas emission within four years in one of the world's most radical experiments to slow global warming. The...