While thousands of Hong Kongers have protested “like water” for the past six months – flowing through the city with seemingly spontaneous movements – the past week has seen a shift in strategy....

Last week’s catastrophic fires on Australia’s east coast – and warnings of more soon to come – will become all too common as climate change gathers pace. And as the challenges of modern hazard reduction become clear, there is...

Nitrous oxide (N₂O) (more commonly known as laughing gas) is a powerful contributor to global warming. It is 265 times more effective at trapping heat in the atmosphere than carbon dioxide and depletes our ozone layer.

Human-driven N₂O...