Pulse oximeters, which spot falling oxygen levels, may work less well on darker skin, experts warn.
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Parts of the UK are already experiencing heatwave conditions which could continue into early next week. from BBC News https://ift.tt/jgmIW...
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By Lydia Polgreen from NYT Opinion https://ift.tt/TP2Yq3m
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The Lib Dems also see a surge in support, while the Tories and Labour suffer heavy losses, as voters split along Leave and Remain lines. f...
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