Ben Valsler tackles 'zombie facts' and the tenuous connection between tryptophan in turkey and your post-Thanksgiving dinner doze

Brian Clegg introduces the class of materials where the holes are more important than the whole – the super-porous zeolites

It helps prevent garlic plants from marauding insects and should have prevented the Hindenburg disaster – Mike Freemantle on allicin and the smell of freshly crushed garlic

Louise Crane explains how a series of happy accidents led to the discovery of this rose-scented compound, found in rose oil, beer, apple pie and Kentucky bourbon.

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