Heat waves hit cities hard – and with climate change, they're only getting worse. Here's how even small gardens, parks and treed areas can make a difference.
The UK's peatlands hold billions of tonnes of carbon – far more than its woodlands. Which is why the 12,000-year-old Border Mires of northern England are finally getting the restoration attention they're due.
Kelp forests are critical ecosystems and effective carbon sinks, too – but they're under threat around the world. This team of free divers and scientists is trying to make a difference, one purple urchin at a time.