TechnologyOur addiction to flying is ruining the climate, but it doesn't have to From simply flying planes in straighter lines to sucking fuel from thin air, a raft of new technologies that could help us fly guilt-free are in the offing Features
EnvironmentAcid is dribbling out of the melting permafrost in the Arctic As climate change thaws the Arctic permafrost, some of it is releasing sulphuric acid – which destroys limestone and releases even more climate-warming carbon dioxide News