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  • Do billionaires have too much influence in both major parties? Three top Republican presidential prospects — Sens. Rand Paul, Marco Rubio and Ted Cruz — say no.
  • NPR's Pentagon correspondent Tom Bowman offers this analysis of the vice president's speech Thursday on U.S. Iraq policy.
  • Best known for 1966's iconic hit "When A Man Loves A Woman," the Alabama singer found success blending R&B with a hint of country. Sledge died Tuesday at 74.
  • A website lets you compare countries around the world to your home state. You can check out other stats, too, from lifespan to income to free time.
  • Why do some cheeses melt and caramelize better than others? Researchers used high-tech cameras and special software to figure it out.
  • The secret DOJ subpoena sought account information for Don McGahn as well as his wife. It is unclear what the department was investigating or whether prosecutors obtained any account information.
  • The pro-democracy newspaper will run its last edition on Saturday — signaling the end to Hong Kong's once freewheeling and muckraking reporting environment as well.
  • California's top election official has announced that organizers of a campaign to recall Gov. Gavin Newsom have submitted enough valid signatures to place the question before voters later this year.
  • In Turkey, the government is touting its donations of medical supplies abroad even though coronavirus is taking a steep toll in Turkey and the economy is on the brink.
  • NPR's David Kestenbaum reports on a possible wrinkle in the space-time continuum. Really. Physicists measuring the fundamental characteristics of a subatomic particle, the muon, have come up with some very puzzling results that could punch a hole in the long-standing "standard model" of how matter is put together. And that could help usher in a completely new theory of matter, time and space. Unless, of course, some scientist has made a mistake. (4:30) (It was later revealed this was a mistake: "Well, I would say I'm responsible for the mistake. My collaborator did most of the work, but I am equally guilty of making mistakes." Toichiro Kinoshita, a physicist at Princeton University. Kinoshita's sin was to have a minus sign where he should have had a plus or maybe the other way around. He can't quite remember, though it ended up having gigantic consequences. Kinoshita and his colleague were calculating how a particular subatomic particle behaves when it's stuck in a magnetic field. The particle, it turns out, wobbles like a toy top at a particular frequency. Kinoshita enlisted hundreds of computers and, after a decade of heroic work, had precisely predicted how fast it should wobble according to the laws of physics. Last winter, other physicists who were out measuring the wobble found it differed significantly from Kinoshita's prediction. In the clockwork world of physics, this was potentially a huge finding, signaling something new and mysterious, except that it wasn't. Kinoshita traced his error to a tiny quirk in a computer program he was using. He hadn't checked that bit, in part because other physicists using a different approach had gotten the same answer."
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