Since 2007, Gideon Mendel has made 20 trips to document floods in 13 countries. The result is an alarming record of what has already been lost to the climate emergency.
As she gears up for the release of her first book, the 24-year-old climate activist talks standing up to authority and building a more inclusive movement.
Filmmaker Laura Poitras discusses her new documentary which traces the remarkable life of the artist-activist and the impact of her battle against the US opioid crisis.
