Insight without the hearsay

Tumour prevention Scientists are discovering a powerful new way to prevent cancer Treatments should encourage healthy cells as well as killing unhealthy ones

Bedtime story Why do people sleep? A new study points to the brain Experiments on fruit flies suggest tiredness could be caused by damaged neurons

America’s missing opposition Donald Trump is unpopular. Why is it so hard to stand up to him? Republicans are servile. Courts are slow. Can the Democrats rouse themselves?

The summit in Tianjin and Beijing  Xi Jinping’s anti-American party To see the cost of Trump’s bullying, tally the world leaders flocking to China

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