Brian Clegg introduces gallium arsenide – the supercar of the semiconductor scene

Georgia Mills introduces the malleable mixture of gold and silver that minted some of the world's oldest coins

Ben Valsler introduces the oxygen sensors that help life react to changing conditions, and were key to the 2019 Nobel prize in physiology or medicine

Enna Guadalupe investigates the toxin found in reef fish that leads to food poisoning so bad it can cause life-long symptoms.

How a Brazilian scientist's knowledge of viper venom led to the discovery of a whole class of medication for high blood pressure. With Mike Freemantle.

Louise Crane investigates a jasmine-derived synthetic scent with supposed sex appeal

Georgia Mills examines a controversial killer: Sodium fluoroacetate or 1080

Sold as a 'sports supplement', methylhexaneamine – or DMAA – is implicated in the deaths of otherwise fit & healthy people. Enna Guadalupe investigates.

Katrina Krämer investigates a marine toxin that drives animals crazy and might have inspired one of Alfred Hitchcock's most famous films

Mike Freemantle revisits battlefield surgery to investigate boric acid, a key part of Dakin's antiseptic solution used extensively in the first world war