我为什么存在? 祖母才是人类进化的关键【亚博app英超买球的首选】

Why do I exist? This isnt a philosophical cri de coeur; its an evolutionary conundrum. At 58, Im well past menopause, and yet Ill soldier, on, with luck, for many years more. The conundrum is more vivid when you realize that human beings (and killer whales) are the only species where females outlive their fertility. Our closest primate relatives–chimpanzees, for example–usually die before their 50s, when they are still fertile.我为什么不存在? 继续阅读

亚博app英超买球的首选-2014年社交媒体业发展趋势5大预言

Stop me if youve heard this one before: An untested social media company with no revenue gets a mind-blowing offer. Against all advice, the cocky, twentysomething CEO refuses to sell. Meanwhile, competitors come out of the woodwork with lawsuits claiming their ideas were ripped off.如果您以前听过这句话,那就当我没有说道:一家予以考验,没任何收益的社交媒体公司取得一个令人头晕的的报价。 继续阅读

武汉楚星推斜楔形透镜光纤全新工艺进一步提升耦合效率:亚博app英超买球的首选

,光纤解决问题方案设计和特工商武汉楚星光纤公司近期顺利研发了全新透镜加工工艺,新工艺具备不转变光纤材料的折射率产于,透镜面形更为极致(楔形透镜极致的解决问题了原有工艺纤芯在电弧静电热熔过程中经常出现的凸起问题,使其沦为长时间的柱面镜面形),经与业内著名器件商因应用于,耦合效率超过83%。 继续阅读