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What "naked" singularities are revealing about quantum space-time
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Time may be an illusion created by quantum entanglement
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Quantum time travel: The experiment to 'send a particle into the past'
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Quantum 'arrow of time' suggests early universe had no entanglement
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How indefinite causality could lead us to a theory of quantum gravity
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Mathematics
500-year-old maths problem turns out to apply to coffee and clocks
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The mathematician who worked out how to time travel
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Most accurate clock ever can tick for 40 billion years without error
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How one theory ties together everything we know about the universe
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Why science relies too much on mathematics
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Why physicists are rethinking the route to a theory of everything
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See antique clockwork marvels from China's Forbidden City
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