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What is air, and how do we know?
Watching bubbles in fermenting beer led 18th-century scientist Joseph Priestley to invent sparkling water – and to discover that different gases make up the air we breathe.
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Foraging for a taste of the past
Follow tips from a professional forager to recreate delicious 18th-century recipes from plants growing wild in parks and on urban wasteland.
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How Indigenous insight inspires sustainable science
The forest of the Amazon Basin is inextricably bound up with the lives of the Indigenous peoples living there. Find out how they feel about the forest, use what it provides, and try to protect it from aggressive commercial exploitation.
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Sacred cows and nutritional purity in India
Apoorva Sripathi explores the complex reasons behind India’s recent boom in all things dairy – beginning with a 1970s Western food-aid programme.
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Booze and bad behaviour
Our love of alcohol is like a party that’s lasted nine centuries. But there are signs that the demon drink is losing its appeal.