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Why a Grape Turns Into a Fireball in a Microwave

The internet is full of videos of thoughtful people setting things on fire. Here’s a perennial favorite: Cleave a grape in half, leaving a little skin connecting the two hemispheres. Blitz it in the microwave for five seconds. For one glorious moment, the grape halves will produce a fireball unfit ...

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Moving artificial leaves out of the lab and into the air

Artificial leaves mimic photosynthesis — the process whereby plants use water and carbon dioxide from the air to produce carbohydrates using energy from the sun. But even state-of-the-art artificial leaves, which hold promise in reducing carbon dioxide from the atmosphere, only work in the laboratory because they use pure, pressurized ...

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Trek Into Congo Forest Reveals an Ebola Crisis Fueled by Violence

Supported by Trek Into Congo Forest Reveals an Ebola Crisis Fueled by Violence By Kimiko de Freytas-Tamura Dec. 26, 2018 Image A vaccination team administering the Ebola vaccine to residents of the Kanyihunga district in Congo, starting with those who had recent contact with Alphonsine Kahindo Kambere, the most recent ...

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Molecular insights into spider silk

They are lightweight, almost invisible, highly extensible and strong, and of course biodegradable: the threads spiders use to build their webs. In fact, spider silk belongs to the toughest fibres in nature. Based on its low weight it even supersedes high-tech threads like Kevlar or Carbon. Its unique combination of ...

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Brazil Election: How Jair Bolsonaro Turned Crisis Into Opportunity

Brazil Election: How Jair Bolsonaro Turned Crisis Into Opportunity Image Jair Bolsonaro speaking to supporters on Sunday in a televised address from his home in Rio de Janeiro after he was declared the winner of the presidential runoff.CreditCreditLeo Correa/Associated Press By Ernesto Londoño and Manuela Andreoni Oct. 29, 2018 Leer ...

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New, highly stable catalyst may help turn water into fuel

Breaking the bonds between oxygen and hydrogen in water could be a key to the creation of hydrogen in a sustainable manner, but finding an economically viable technique for this has proved difficult. Researchers report a new hydrogen-generating catalyst that clears many of the obstacles — abundance, stability in acid ...

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