36氪获悉，3月3日收盘，美股三大指数集体下跌，道指跌0.83%，纳指跌1.02%，标普500指数跌0.94%。大型科技股涨跌不一，微软涨超1%，奈飞、Meta、亚马逊小幅上涨；英特尔跌超5%，特斯拉跌超2%，英伟达跌超1%，苹果、谷歌小幅下跌。热门中概股普跌，小鹏汽车跌超6%，阿里巴巴跌超4%，百度、名创优品跌超3%，理想汽车、蔚来、京东、拼多多跌超2%。
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A 10-year-old taking college courses has always been an outlier—but Cooper’s story lands at a fraught moment for American education. Mounting evidence suggests Gen Z and Gen Z Alpha are falling behind their parents, with many students performing below pre-pandemic levels.
Once Art Borkent starts speaking about biting midges, he rarely pauses for breath. Holding up a picture of a gnat trapped in amber from the time of the dinosaurs, the 72-year-old taxonomist explains that there are more than 6,000 ceratopogonidae species known to science. He has described and named more than 300 midges, mostly from his favourite family of flies. Some specialise in sucking blood from mammals, reptiles, other insects and even fish, often using the CO2 from their host’s breath to locate their target, he says. Tens of thousands remain a mystery to science, waiting to be discovered.