粘着テープを剥がすときの「ピーッ」という音は音速超えの衝撃波によって引き起こされていることが判明

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One reason for routinely launching GPS satellites is simply "constellation replenishment," said Col. Andrew Menschner, deputy commander of the Space Force's Space Systems Command. Old satellites degrade and die, and new ones need to go up and replace them. At least 24 GPS satellites are needed for global coverage, and having additional satellites in the fleet can improve navigation precision. Today, there are 31 GPS satellites in operational service, flying more than 12,000 miles (20,000 kilometers) above the Earth.

Michael left Uber in 2017, but made some news of his own along the way. Three years before his departure, BuzzFeed reported that he had “outlined the notion of spending ‘a million dollars’” to hire four top opposition researchers and four journalists to look into the personal lives of journalists who covered Uber and its executives. That same year, while in Seoul, Michael and several Uber executives (including Kalanick) visited a “hostess-escort karaoke bar” where female hostesses were presented to the group, according to accounts later reported to Uber’s human resources department. Four men selected hostesses and remained at the venue to sing karaoke. At least one female Uber manager in the group said the situation made her uncomfortable and filed a complaint with HR roughly a year later. The story of the HR complaint surfaced three months before Michael left Uber. An investigation by Business Insider reported that Michael resigned in the wake of U.S. Attorney General Eric Holder’s investigation into Uber’s workplace—which prompted the company to implement dozens of policy and leadership changes. (A spokesperson for the Department of War declined to comment on Michael’s conduct.)

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Additionally, in Canada, Bumble is testing Suggest a Date, a low-pressure way to signal that you're ready to take things off the app.

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World Service,·23 Feb 2026,·26 mins