What Exactly Are 'Nature-based Solutions'?
Tree-lined streets in Medellín, Colombia. Since 2016, the city of Medellín has planted over 8,000 trees in 30 “green corridors” to address the city's urban heat effect. Photo: Red River/Flickr In the Seychelles archipelago in East Africa, flooding and erosion caused by rising sea levels pose an imminent threat to the country’s many low-lying islands. At the same time…