Meta said that it had filed lawsuits against several people in Brazil who promoted fake or unapproved healthcare products and online courses promoting them. The company also sued a China-based entity it says used ads featuring celebrities "as part of a larger fraud scheme that lured people into joining so-called investment groups." The company didn't provide details on how many ads these groups had run on Facebook, how many social media users had seen or interacted with the ads or how long the scammers had been operating on the platform.
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但无须回避，试行这一制度，也存在不同学校不同学科对博士生的考核要求不同的问题。如相对于理工科博士大多要参与导师的课题、项目，要给导师干活，导师对申请者的考核比较严格不同，文科生申请博士，由于导师承担资助经费相对较少，且有的文科导师并不需要学生给自己的项目干活，也就更容易出现“放水”问题。另外，舆论质疑的“人情交易”“钱学交易”“权学交易”“近亲繁殖”等问题，也在个别学校的个别导师招收博士生时存在，被举报、曝光。
Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00294-5
The Samsung Galaxy S26 Ultra with 512GB is priced at $1,499.99 on Samsung's website, yet we found a major deal on Amazon. As of Feb. 27, the phone paired with a $200 Amazon gift cart is a bundle worth $1,699.99, but it's on sale for just $1,299.99. That saves you $200 off the phone plus gets you a free gift card, saving $400 for 24% off.