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Using powerful magnets to levitate fruit flies can provide vital clues to how biological organisms are affected by weightless conditions in space, researchers at The University of Nottingham say.

In this month's edition of Physics World, David Wilkinson, visiting fellow at Nottingham Trent University and former project manager in the UK Home Office Scientific Development Branch, explains how physics is at the forefront of police weapons testing, making sure that potential devices meet the strict criteria set out by the UK government.