Show Notes
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Mark Rober spent years trying to land a rover on Mars. Now, the former NASA engineer turned science YouTuber with millions of subscribers is launching a new mission: to teach the next generation of big problem solvers. That's why he's spending 60 million dollars to build a STEM curriculum kids actually want. With squirrel obstacle courses, giant lasers and elephant toothpaste explosions, who wouldn't want to learn from YouTube's top engineer? 马克·罗伯（Mark Rober）曾花费数年时间尝试让探测器登陆火星。如今，这位从NASA工程师转型为科学类YouTuber、坐拥数百万订阅者的网红，正开启一项全新使命：培养下一代解决重大难题的人才。为此，他投入6000万美元，打造一套孩子们真正感兴趣的STEM课程。有了松鼠闯关赛道、巨型激光器和“大象牙膏”喷射实验，谁不想跟着YouTube上的顶尖工程师学习呢？
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获取全套TED资料（音频、视频、英中双语对照文本），请关注公众号【悦读烩】 If you ate bread this week (or cooked with salt and oil), you probably benefited from something millions miss out on: food fortification. Social entrepreneur Felix Brooks-church is on a mission to solve "hidden hunger" -- malnutrition caused by a lack of nutrients -- by fortifying everyday foods for regions of the world hit hardest by food insecurity. Laying out a pragmatic vision to improve food systems globally, he reminds us that hunger doesn't always look like an empty plate. 如果你这周吃过面包（或是烹饪时用了盐和食用油），那你或许已经受益于一项数百万人无缘享用的举措：食物强化。社会企业家费利克斯・布鲁克斯 - 彻奇（Felix Brooks-church）致力于解决 “隐性饥饿”—— 也就是营养素缺乏引发的营养不良问题。他的办法是，在粮食安全问题最严峻的地区，给日常主食添加营养素。他提出一套务实的构想，意在改善全球粮食体系，并提醒我们：饥饿，未必总是表现为空空如也的餐盘。