How to feed the world without costing the earth

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Globally, agriculture is the greatest threat to biodiversity and a major contributor to anthropogenic greenhouse gas emissions. How we choose to deal with rising human food demand will to a large degree determine the state of biodiversity and the wider environment in the 21st century. This talk focuses on two contrasting supply-side approaches to this challenge: land sharing, in which farmland is made as friendly to wildlife as possible, albeit at the cost of lower yields; and land sparing, in which space for nature on unfarmed land is maximised by farming elsewhere at high yields.

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