Poor sleep makes people pile on the pounds, study finds

Disrupted sleep alters metabolism and boosts body’s ability to store fat, data shows

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Shoppers being misled by labels that claim food is ‘artisanal’ or homemade

Manufacturers too often make false claims and use deceptive pictures on labels, and regulation should be toughened up, says EU consumer champion

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Work stress raises risk of premature death in vulnerable men – study

Men with diabetes or heart disease under ‘job strain’ have 68% higher risk of early death

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A brief history of A Brief History of Time by Stephen Hawking

The late physicist’s editor, Peter Guzzardi, recalls his first meetings with Hawking and how his book became a bestseller

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Stephen Hawking, science’s brightest star, dies aged 76

The physicist and author of A Brief History of Time has died at his home in Cambridge. His children said: ‘We will miss him for ever’

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Two become one: two raven lineages merge in ‘speciation reversal’

After up to two million years of separate evolution, two types of common raven have been ‘caught in the act’ of consolidation, say scientists

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Schools are not the answer to childhood obesity epidemic, study shows

Researchers say much wider action is needed after a major programme in primary schools in the West Midlands was shown to have made no difference to obesity levels

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Folic acid: new research is a ‘game-changer’ in push to fortify British foods

Study concludes there is no need for an upper limit on folate, removing a further barrier to mandatory fortification that would prevent birth defects

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Even one cigarette a day greatly raises cardiovascular risk, experts warn

Impact of one daily cigarette on risk of heart disease and stroke greater than previously thought

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Researchers share $22m Breakthrough prize as science gets rock star treatment

Glitzy ceremony honours work including that on mapping post-big bang primordial light, cell biology, plant science and neurodegenerative disease

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New frontier for science as astronomers witness neutron stars colliding

Extraordinary event has been ‘seen’ for the first time, in both gravitational waves and light – ending decades-old debate about where gold comes from

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