Health
Replacement artificial heart keeps first patient alive
An artificial heart made by the French firm Carmat has been implanted in its first human patient 鈥� and is working well so far
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Feedback: Positive beauty of laboratory tests
Feedback is our weekly column of bizarre stories, implausible advertising claims, confusing instructions and more
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Pedal or push?
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Big bright spark
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We bid a fond farewell to Enigma
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Space
Infrared reveals stunning colours of asteroid’s crust
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