To keep global warming within an acceptable range, we must reduce the amount of plastic we produce, consume, and discard, say Froilan Grate and Lili Fuhr

The only way to know how any so-called geoengineering techniques would affect the climate is to deploy them over several decades on a massive scale, writes Silvia Ribeiro

Standing up to energy producers and getting them to leave fossil fuels in the ground is the only way to fight climate change globally, writes Lili Fuhr