La Niña is finishing an extremely unusual three-year cycle – here’s how it affected weather around the world
To clean up England’s rivers we need to know how much sewage is dumped – but water firms won’t tell us
Tropical seagrass meadows are sand factories that can help defend coral reef islands from sea-level rise
Plan will put everyone in England within 15 minutes of green space – but what matters is justice not distance
Geography Directions 