Since 2018, schoolchildren across the world have been striking on Fridays to draw attention to the worsening climate crisis. On 20 September 2019 they were joined by millions of adults for the Global Climate Strike.Friends of the Earth's Muna Suleiman interviewed the youth climate activists at the heart of the school strikes just days before the historic event. This is their story.Support the show (https://act.friendsoftheearth.uk/donate/make-a-donation?_ga=2.1735858.2055361964.1579523061-622360301.1536752803)