423 A Quiz

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424 Liquid tofu

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425 Humanoid robots

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429 Tengwar

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430 Artificial gravity

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432 A new musical instrument?

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433 A puzzle

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438 The word 'quoth'

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439 Waves

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440 The photoelectric effect

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441 Moba

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443 Sculpture in the city

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444 United Kingdom Barcoded postage stamps

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446 Logos

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449 The energy price cap

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450 Trees and forests

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