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Explore the most exciting new ideas and emerging concepts in science, health, technology and the environment with Â鶹´«Ã½â€™s exclusive in-depth articles, interviews and long reads.

Open wide, we’re going to explore – Fighting tooth decay by annihilating all the mostly harmless bacteria in your mouth is like taking a sledgehammer to crack a nut. Garry Hamilton looks at more subtle ways of stopping the rot

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It all adds up

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All the world’s a time machine – Imagine that there are loops in space-time, and that the future can influence the past. Marcus Chown meets a physicist who is convinced that this is exactly how the Universe works

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The intraterrestrials – Deep in the Earth’s crust, undreamt-of life forms are scratching a living from little more than barren rock, discovers Stephanie Pain. And if life can survive there, why not inside another planet?

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Making waves – Could this be the big idea that will break through computing’s speed barrier? Paul Marks meets a man who is trying out a radical new way of working with semiconductors

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Trials and tribulations of a drug tester

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Fast and furious – Tucking into a casserole straight out of the domesticmicrowave can be a searing experience. But for chemists the effects of superheatingare pure magic. Gavin Whittaker investigates

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Hot Rocks – There’s a secret to cooking up the perfect fake diamond or emerald. Whatever your brand of alchemy, throw in a few flaws, says Amy Adams, or the gem police will get you

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Land of the loveless – Three years ago Curtis Abraham set out for the northeast corner of Uganda to find out for himself the truth about the infamous Ika people. This is his story

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Physics

Take a spin…

It's intellectually fancy enough to please physicists at the frontier. It's also practical enough for diehard engineers worrying about the limits of tomorrow's computers. Robert Matthews unveils spintronics

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A snail’s pace – What has downloading intricate graphics from the Web got to do with entropy? Whatever you do, don’t go surfing for the answer, warns Charles Seife

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Cellwars – It’s good, but not good enough, all the while women are dying. Could cervical screening get some much needed help from Ronald Reagan’s Star Wars programme, asks Helen Gavaghan

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Health

The Dutch experiment : Vraag een politieagent . . . – Go ahead, ask a cop for dope. The Dutch don’t mind

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Special report : Marijuana

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