As the UK's highest ever temperature is recorded at Heathrow airport, why does it get so hot?
Thousands skip school to urge action on climate change, despite criticism from PM Scott Morrison.
The mass stranding on Chatham Island means more than 200 whales have died off NZ in the past week.
A Honduran court finds seven men guilty of killing renowned environmental campaigner Berta Cáceres.
The United Nations biodiversity chief on why extinction is a "silent killer" and deserves more attention.
UK researchers develop an early warning system to prevent crops in Africa being devastated.