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This month’s podcast features a long journey across Tanzania to discover how low-tech innovation can help developing nations eradicate poverty and meet the Millennium Development Goals. From improved cookstoves to a new system that combines sanitation and composting, small initiatives aimed at local communities can bring big leaps where limited resources and infrastructure are available. Looking at the Millennium Development Goals, we also shed light on what’s needed to reduce global carbon emissions in order to reduce global warming and prompt sustainable development. Joyeeta Gupta of the University of Amsterdam, in the Netherlands, says that countries ignoring the issue of climate change have to be isolated by the international community, while the developing world needs to find a new model of sustainable development. We then talk about conservation with the story of an award-winning vet who is trying to save the endangered grey crowned crane of Rwanda, which is being wiped out by poaching. We also meet