a former product manager, has blown the whistle on Facebook - telling US politicians that its platforms"harm children, stoke division [and] weaken our democracy". Shares of Facebook, which has nearly two billion daily active users, closed 4.
9% lower on Monday, wiping $47bn off its market value.We have summarized this news so that you can read it quickly. If you are interested in the news, you can read the full text here. Read more: