In one study designed to measure the effects of adversity on children at risk, 在一项设计用来衡量逆境对困苦的孩子会产生怎样影响的研究表明， among a subset of 698 children who experienced the most severe and extreme conditions, 在69
成大事者 当知分享。 Thank you, President Crow, for that generous introduction. I really appreciate our friendship and everything we are doing together. Thank you to the Arizona Board of Regents, faculty and sp
全球变暖是我们目前面临的一个大问题，不过全世界都过分关注二氧化碳，却忽略了另外一个重要的气体——甲烷。 Fred Krupp: Let's launch a satellite to track a threatening greenhouse gas 我们能否发射一颗卫星来追踪威胁地球的温室气体？ We've got a big problem on our hands with global
Ryan Holladay:To Hear This Music you have to be there literally 莱恩·哈雷德: 想听音乐，一定要亲临现场！ 音乐产业常常在数码时代举步维艰。在这个有趣的演讲中，Ryan Holladay告诉我们，他为什么要尝试他所说的“位置感知型音乐”。完成这个编程和音乐上的壮举需要上百个地理标记过的音乐片段，而
