Cleaner mining, cleaner batteries
Science in Action is at the UK's Royal Society Summer Science Exhibition, hunting for dark matter, melting ancient ice, cleaning up disused mines and looking for the batteries of the future.
Presenter: Roland Pease \nProducer: Alex Mansfield \nProduction Coordinator: Jana Bennett-Holesworth
(Image: Pile of used batteries ready for recycling. Credit: Mindful Media via Getty Images)