Celebrities and their conservation campaigns

The stars have been writing letters, staging evens and filming heartfelt pleas to bring the public on board with saving wildlife

World’s cities experiencing more heatwaves, study shows

Number of extremely hot days a year has increased in hundreds of cities since the 1970s years, with frequencies peaking in the last five years

Green news roundup: fracking bans, Paris climate summit and pine martens

The week’s top environment news stories and green events. If you’re not already receiving this roundup, sign up here to get the briefing delivered to your inbox

Climate change is lifting Iceland – and it could mean more volcanic eruptions

Land moving upward faster than researchers expected at 1.4in every year, allowing ‘hot potato’ rocks to rise

Why it’s good to laugh at climate change

Climate gags are notable by their absence, but an RSA event on Tuesday night hopes to show that climate change comedy can raise laughs and awareness

Perfume manufacturers must cope with the scarcity of precious supplies

The raw ingredients in famous brands are vulnerable to political upheaval, changes in agricultural practices and natural disasters