The test that could save millions from drinking arsenic

Professor Joanne Santini (UCL Structural & Molecular Biology) talks about her discovery of an arsenic-eating bacterium, affectionately known as Mr Tickle, which is being used to detect arsenic in drinking water and could help to prevent mass poisoning in Bangladesh.

Listen: BBC World Service’s ‘People Fixing the World’ (from 9 mins 38 secs)