How might digi-hogs help our hedgehogs?

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Cambridge University academics are hoping to figure out how to save our hedgehogs. Researchers are using a hi-tech approach to stop their decline by mapping habitats. Satellite images, Artificial Intelligence and "digi-hogs" are all involved. Anil Madhavapeddy is a professor of Planetary Computing and tells Louise Hulland how he 'accidently' got involved in the project. (Picture Credit: BBC).