cc As climate change forces economies around the world to cap carbon emissions, investors are pouring cash into the development of biofuels, as a replacement for fossil fuels. Seif Madoffe writes that this has led to ‘climate colonialism’ – ‘a massive land-grabbing scramble in Africa’, as European companies – some with foreign aid money support – rapidly establish enormous carbon monoculture fields in tropical countries. With reference to the Saadani National Park in Tanzania, Madoffe asks whether it is ethical for rich countries in the North to make ‘renewable’ carbon in places where it has serious negative impacts on poor people and tropical forests that will be cut down to create space for ‘carbon fields’ in monoculture plantations.