
Biochar - the charcoaled remains of agricultural waste - is being hailed as a huge opportunity to reduce the levels of carbon dioxide in the atmosphere. But is the science sound, and do we have enough waste to go around?
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More sites may be added to the UNESCO List of World Heritage Sites in Danger this week, but how effective is this register of global hot spots, and what are the areas that truly deserve international protection?
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Plans to bulldoze an Indian mountain sacred to local people were controversial enough... before shareholder data revealed that a raft of UK household names, ranging from Jaguar cars to the Church of England, own shares in the company behind the mine, Vedanta Resources plc
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