Climate change is the biggest moral problem of our time, as people who have contributed little to the pollution responsible for global warming are increasingly understood to be most vulnerable to the shifting environment around them. ""Boiling Point"" explores the lives of South Africans affected by this phenomenon: a rooibos tea farmer in the Northern Cape, a traditional fisherman on the West Coast, a farmer in the centre of the Free State's maize belt, a political refugee in Pietermaritzburg and a sangoma (traditional healer) in Limpopo mining country. These communities live on a knife-edge because of poverty and their dependence on an already capricious natural environment. ""Boiling Point"" considers what might happen to them as normal weather trends are amplified in a hotter world.