Protests in Tunisia continue

More than 500 people have been arrested after three nights of violence in Tunisia. Protests against the government's austerity measures began peacefully when they started last week. We hear the latest from colleagues monitoring the situation on the ground and the reaction locally on social media.

Also we hear the latest on the #JusticeForZainab campaign, following the death of the Pakistani young girl, whose body was discovered in a rubbish dump on Tuesday. And as the British Government proposes to eradicate all avoidable plastic waste in the UK by 2042, we hear from listeners around the world about their experiences of plastic pollution.

(Photo:Tunisian security forces track down protesters in Tunis, 10 January 2018. Credit: Fethi Belaid/AFP/Getty Images)