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SpaceX launches mysterious payload that lights up evening sky

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SpaceX launched a Falcon 9 rocket carrying a mysterious government satellite known as “Zuma” Sunday, lighting up the night sky as the booster climbed toward space and then lighting it up again a few moments later as its reusable first stage descended on a jet of flame to a pinpoint touchdown.. CBS New York video.

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Years after transatlantic slavery, DNA tests give clarity

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DNA ancestry tests in the last decade have helped some African-Americans reconcile with aspects of their identities that might have been obscured during the transatlantic slave trade. Alondra Nelson chronicles this journey in her book, “The Social Life of DNA: Race, Reparations and Reconciliation After the Genome.” Nelson joins Hari Sreenivasan.

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These robots are helping answer a huge unknown about young marine life. PBS Video

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Many mysteries remain about life under the sea, like what happens to marine creatures between life stages of larvae and adulthood. These tiny creatures are extremely hard to track in the open ocean, so one marine ecologist is using robots to mimic the larvae’s motions in order to determine what control they have over their own fate. Special correspondent Cat Wise reports. Video

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Cambridge Vice-Chancellor: Brexit is bad for scientific research. Video CNNMoney News

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On June 23, Britons vote in a referendum on whether to stay in the EU or leave the bloc. Richard Quest is traveling across the UK to hear from the people. He begins in Cambridge to find out why the University’s students, professors and scientists overwhelmingly favor staying in the EU. Video CNNMoney News

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20% of Our Oxygen Comes From a Bacteria

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When you think of bacteria, you might think of the flu, your kindergartner, or the TV remote, but you probably don’t think of oxygen. Get this: Bacteria provide oxygen for about one in five of your breaths. Without these microbes, you, your family, and most importantly the TV remote wouldn’t exist!

These minuscule ocean-dwelling oxygen makers are Prochlorococcus. These little guys are special because they contain chlorophyll, the compound that allows for photosynthesis. For those of you who didn’t pay attention in science class, photosynthesis is a process that converts light energy from the sun into fuel for an organism. A by-product of this activity is oxygen.

Prochlorococcus is believed to be the most abundant photosynthetic creature on the planet and may provide as much as 20 percent of the oxygen you breathe. National Geographic video news

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