What's behind the rise of extreme wildfires and the UK's first 'mega fire'

What You Need To Know

The wildfires that engulfed Los Angeles earlier this year looked like something you'd expect to see in a Hollywood disaster movie.
But new data shows they're becoming an increasing reality across the world and the UK has now had its first 'megafire'.
Martin Stew tells Lucy Watson exactly what damage all that burning is doing to the planet