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Today on New Scientist: 26 August 2009

作者:林候棉    发布时间:2019-03-08 02:14:13    

We’ll be running this daily round-up as an experiment for the next two weeks. Did you find it useful? Do you have suggestions about how we can make it better? Let us know. Thanks for your comments so far: we’re taking notes. Beyond space and time: Fractals, hyperspace and more It’s easy to understand how three or even four dimensions work, but how about ten? Or one and a half? Or none? Prepare your mind for boggling Chromosome transplant to sidestep genetic disease To prevent disease caused by mutant mitochondrial DNA, just swap out egg chromosomes Many degrees of separation in dementia brains The network structure of healthy brains allows very efficient communication between different brain regions – but people with dementia don’t have it Long-range Taser reignites safety debate What do you get if you cross a shotgun with a stun gun? A whole new set of risks, say researchers Cheap IVF offers hope to childless millions Perceived as over-populated by people in the west, Africa has a higher rate of infertility and infertile couples face huge social stigma NASA’s lunar impactor loses most of its fuel A glitch caused NASA’s LCROSS probe to repeatedly fire its thrusters to try to orient itself – but officials say it has plenty of fuel left to impact the moon as planned US national parks face ‘greatest threat’, Senate told Senate Committee on Energy and Natural Resources told that state parks are likely to be changed radically by global warming My ‘non-human’ DNA: a cautionary tale Having your genome scanned is the first step into the future of personalised medicine – but what if the software mangles your data? Mammal database identifies species destined for trouble A new interactive tool that allows users to explore survival chances of various mammal species could be useful in planning conservation schemes ‘Nowcasts’ give thunderstorm early warning A technique that borrows ideas from cyclone prediction will soon be used in Australia to better forecast the movement of thunderstorms Climate tipping point defined for US crop yields When farms start spending too long above 29 °C, yields will nosedive, says a new study Keyboard style could give early warning of dementia Software that monitors how we use a keyboard shows that we type differently when we’re under stress, and could flag up signs of cognitive deterioration Space probes fly in tandem to search for lunar water For the first – and likely the last – time on Thursday,

 

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