The science behind yo-yo diets, bird flu news and which Brits can spot a fake accent

‘Travesty of justice’: Cop29’s controversial deal

What’s going on with fluoride?

What really helps with hangovers?

Revisited: Secrets of the gut microbiome

The science of laughing

Does Google’s ‘mindboggling’ new chip bring quantum computers any closer?

Is our model of the universe wrong?

‘Soft and calorie dense’: Chris van Tulleken on how ultra-processed foods keep us hooked

Revisited: are the world’s oldest people really that old?