Designing the next slogan to inspire people on complex environmental issues like global warming and clean water will take a lot of creativity. In fact, it will probably take more creativity than I ...

as governments declare their commitments to meeting the Paris Agreement goal of holding global warming under 1.5°C. But what exactly is "net zero", and where did this concept come from?

Protesters across continents waved placards and chanted slogans in what could be the biggest ever demonstration over global warming caused by humans. "Our house is on fire", Ms Thunberg said at a ...