Mike Freemantle discovers a sweet solution to monitoring contaminated water

Kat Arney takes a long, hard look at the story behind those famous little blue pills

Brian Clegg introduces a failed rocket fuel oxidiser with a very tricky structure

Kit Chapman discovers the compound that blighted Nixon's second presidential inauguration by littering the route with dead pigeons

Kat Arney investigates the cancer-causing chemicals that could be lurking in that bag of peanuts

Brian Clegg freshens up the podcast with a spritz of lemon scent, courtesy of neral and geranial, collectively known as citral

Neil Withers relives a choppy (and messy) sea voyage to bring us the science of anti-seasickness drug cinnarizine, known in the UK as stugeron

Discover the compound at the heart of a multi-million dollar legal case and an Oscar–winning role for Julia Roberts

Kat Arney explains how an attractive blue dye, with a name inspired by the British Empire's military exploits, became the basis of a fundamental lab technique