When mercury pollution makes headlines, it's often linked to fish and human health. But there's another big source of mercury pollution that's affecting millions of people across the world - artisanal and small-scale gold mining. This episode looks at efforts in South America to reduce mercury use in mining - and what that means for people's health and the f ... Show More
Aug 7
Should we be eating more ‘forgotten foods’?
At least 30,000 of the 350,000 known plant species on our planet are edible, according to the United Nations' Food and Agriculture Organization, but only 170 species of plant are cultivated for food on a large scale. As climate change affects plant yields and disease threatens so ... Show More
14m 42s