Ever wondered why chips packets feel half empty when opened? That “air” isn’t what it seems. There’s science, safety rules, and smart packaging behind it, used by all major brands to protect taste and ...

Why has the scruffier cousin of the sleek domestic pigeon - and any deterrent - proved so divisive?

Editors sampled each of the 10 chips without knowing which was which. (And without salsa, although they had the option to ...