Pollution isn't quite so bad that it completely cancels the benefits of a run, but you're not helping yourself by jogging on a main road.
Old Tidemill Wildlife Garden in Lewisham was a green oasis.
We took photos so you can see what that looked like.
On the day of the second student climate strike, Lewisham's 16-year-old Young Mayor writes about the problems he and his class-mates face.
Greta Thunberg's one-woman strike has grown to become one of the largest student-led demonstrations in history.
Is Labour going to give the UK a Green New Deal?
"I don't think it's an acceptable risk to bring children into the world – the likelihood of a safe future for them has to increase dramatically first."
The bizarre existential dread that comes with weather that's actually nice before Pancake Day.
"If you're a nana with a bad hip, that makes you one of our best fighters: no cops are going to want to touch you."
In the 1970s, workers at a defence manufacturer in Lancashire came up with a radical idea to start making things that would be better for society.
Climate change and a potentially vulnerable insurance market could combine in a disaster that starts in South Florida but hits the entire globe.
We went to the radical climate group's offices to hear their plans for civil disobedience.