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Humans

Holiday brain-off round 4: Demonstrate the wisdom of the ages

Use the knowledge you've gained from the school of hard knocks to fill in the missing words most accurately

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Life

Tree of life: How figs built the world and will help save it

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Technology

Medieval wax seals are giving up fresh historical secrets

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Physics

The fragile state of scientific glassblowing

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caribou

Life

Reindeer riddle: How do you tell caribou apart?

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Technology

Don’t believe the Skype: We never wanted to video call people

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Humans

Holiday brain-off round 3: Build the Tower of Hanoi

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Humans

Holiday brain-off round 1: Challenge your original thinking

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Health

Hangovers: What science says about why you feel so rough

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Earth

Animal magnetism: Why dogs do their business pointing north

Dogs align north-south when defecating, foxes pounce north-east, and that’s just the start. Where does this magnetic sense come from – and do we have it too?

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Technology

Fold your own universe with our cosmic origami decoration

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Technology

Quantum computers ditch all the lasers for easier engineering

News

Life

Quantum solar cells could explain why plants are green

News

Physics

Physics may be a small but crucial fraction of our reality

Culture