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GOOD HYDRATIONS from Water to Wheatgrass Smoothies, What to Drink – and What to Avoid

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GOOD HYDRATIONS from Water to Wheatgrass Smoothies, What to Drink – and What to Avoid ZIKA, SEASON 2 It’s back, and more dangerous than ever TYING THE KNOT String theory and loop quantum gravity get hitched PREHISTORIC ANTIBIOTIC Neanderthals knew the medicinal power of mold WEEKLY March11-17,2017 GOOD HYDRATIONS From water to wheatgrass smoothies, what to drink – and what to avoid Can tea prevent Is coffee bad cancer? for you? Does diet soda make you fat? Does juice count as a 5-a-day? No3116 US$6.50 CAN$6.50 10 Do you really need 8 glasses Science and technology news www.newscientist.com 0 70992 30690 9 a day? US jobs in science CAN YOU FEEL IT? Not everybody experiences emotions the same Intellectual stimulation Subscribe and save up to 76% Visit newscientist.com/9667 or call 1-888-822-3242 and quote 9667 FEEDING MINDS FOR 60 YEARS CONTENTS Volume 233 No 3116 This issue online newscientist.com/issue/3116 News Leader 5 Trump’s assault on climate science will not 8 make America great News Fresh Zika threat looms 6 UPFRONT CO2 forecast is worrying. Facebook’s suicide The virus is back prevention tools. China’s secret rocket launch 8 NEWS & TECHNOLOGY and more dangerous Black holes from a huge star. Neanderthals than we thought self-medicated. Robots learn when humans spot mistakes. OCD makes it harder to learn that things are safe. The best exercise to rejuvenate cells. Fuzzy pulsars could reveal UESLEI MARCELINO/REUTERSUESLEI quantum gravity. Brighter skies behind crop boost. Device translates one person’s emotions into another’s movements. App On the cover checks for Parkinson’s in minutes. Foam sucks up oil spills. Artificial embryo grown in 8 Zika, season 2 a dish. Bomb craters full of rare aquatic life 32 It’s back, and more 19 IN BRIEF dangerous than ever Plants with a sense of taste. A Shazam for Good hydrations 28 Tying the knot art. Autoimmune disease link to dementia Loop quantum gravity and From water to string theory get hitched Analysis 9 Prehistoric antibiotic wheatgrass, what to 22 Sea change Plankton can save the ocean, Neanderthals knew the drink and what to avoid but we need to save the plankton medicinal power of mould 24 COMMENT 40 Can you feel it? The sepia-tinged lure of old tech. Not everybody feels Is bringing back extinct species a dead loss? emotions the same way 25 INSIGHT Cover image Guillaume Kurkdjian Why we’re sending billionaires to the moon Aperture Features 26 The perfect fishy grin for crunching up prey 28 Features 28 Tying the knot (see left) Tying the knot 32 Good hydrations (see above left) 40 PEOPLE The unlikely marriage Lisa Feldman Barrett’s gamut of emotions of string theory and loop quantum gravity Culture 44 A tragedy looms? Individualism in the US will reshape the nation’s green thinking 45 Competition 48-hour flash fiction challenge 46 Strange futures What was hippie modernism? DOMENIC BAHMANN Regulars Coming next week… 52 LETTERS More than NASA depended on women What’s up with gravity? 55 CROSSWORD The cosmic force isn’t making sense 56 FEEDBACK Self-confessed liars More than a hound dog 57 THE LAST WORD Grain train What dog personality reveals about us 11 March 2017 | NewScientist | 3 INSTANT EXPERT: THE QUANTUM WORLD SATURDAY MARCH 11, 2017 Six leading quantum experts, one amazing day of discovery. Get to grips with the fascinating world of quantum physics and ask our speakers the questions you’ve always wanted answering. By the end of the day you’ll feel like an expert too. THE BIG THEMES: Learn about quantum computing and how to use quantum physics to power technology. Explore quantum weirdness, quantum gravity and much more. BUY YOUR TICKETS NOW: newscientist.com/quantumboston 10am-5pm Suffolk University Law School Boston, MA OUR EXPERTS: Seth Lloyd, Vladan Vuletic, plus 4 more speakers to be announced. Hosted by Lisa Grossman. 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