Category Archives: Science

Mistrust of CDC Covid Info in Medical Community

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Johns Hopkins University Professor of Nursing Jason Farley discusses the ethics of a planned U.K. covid-19 trial, U.S. confidence in taking a coronavirus vaccine, and shifts in Covid guidelines from the Centers for Disease Control. He speaks with Bloomberg’s Francine Lacqua on “Bloomberg Surveillance.” The Bloomberg School of Public Health is supported by Michael R. Bloomberg, founder and majority owner of Bloomberg LP, the parent company of Bloomberg News,
Bloomberg Markets and Finance News video.

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What Are Algorithms and How Do They Influence Your Life?

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We spoke with Pedro Domingos, a computer science professor at the University of Washington, and author of “The Master Algorithm,” about the ever-growing role algorithms play in our lives.

Mashable USA News.

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Why Now is the Golden Age of Paleontology

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With advancements in technology and access to areas once considered unreachable, the field of paleontology is experiencing a golden age of discovery. Roughly 50 new dinosaur species are found each year, giving us a closer look at their prehistoric world like never before. Our previous understandings of how dinosaurs looked and evolved are being revolutionized, especially in regards to evidence that modern birds descended from dinosaurs. But while it’s exciting to see how incredibly far paleontology has come from the previous generations, it’s equally as thrilling to imagine what new discoveries lie just ahead.
National Geographic Media video

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Turbulent Flow is MORE Awesome Than Laminar Flow

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Everyone loves laminar flow but turbulent flow is the real MVP. A portion of this video was sponsored by Cottonelle.
I got into turbulent flow via chaos. The transition to turbulence sometimes involves a period doubling. Turbulence itself is chaotic motion, it is unpredictable and sensitively dependent on initial conditions. What surprised me is all the ways turbulent flow is useful to us. It is diffusive, meaning it causes mixing. This is useful in jet engines or rocket nozzles (which Destin studies) and is important to achieve in microfluidic devices, which are so small that turbulent flow is actually difficult to achieve. Turbulent flow can energize a boundary layer, which is important to maintain flow attachment over a wing, maintaining lift and delaying stall. Similarly a turbulent boundary layer over a golf ball reduces pressure drag allowing golf balls to fly further. This is the reason for the dimples on golf balls. Flow transitioning to turbulence in the wake of a bluff body can create periodic vortex shedding.
This beautiful phenomenon can be seen in the von Kàrmàn vortex street in clouds viewed from space. Turbulence is everywhere, in the air currents in a room, in your aorta, in the breaths you exhale, in oil pipelines and water pipes, in the flow over cars and ships and planes. Animals have evolved for it (like dead fish swimming up stream) and we have engineered our environment, our planes and golf balls for it. Laminar flow may be nice to look at (which is why we use it in decorative fountains) but turbulent flow does the real lifting. Animations by: Jonny Hyman (Sun, Jupiter, Reynolds, airfoil, Earth time-lapse) Research and writing: AJ Fillo and Derek Muller. AJ also created the wind tunnel golf ball shots Filmed by: Daniel Bydlowski and Derek Muller Additional footage: Images of Jupiter courtesy of NASA Turbulence in air currents by the Physics Girl, Dan Walsh, and Grant Sanderson

Veritasium video

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World’s Lightest Solid ?

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Aerogels are the world’s lightest (least dense) solids. They are also excellent thermal insulators and have been used in numerous Mars missions and the Stardust comet particle-return mission. The focus of this video is silica aerogels, though graphene aerogels are now technically the lightest. At one point Dr. Steven Jones literally held the Guinness World Record for making the lightest aerogel and therefore lightest solid. If you’re interested in learning more about aerogels, let me know in the comments as there is a potential trilogy in the works…..

Veritasium

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Why Are Scientists Promoting Anti-Science?

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Ben Shapiro speaks with mathematician and author David Berlinksi about how scientists have caved to the politically correct and the government’s role in enforcing your personal life.
Daily Wire video.

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As Trump administration pushes for new space exploration, critics question its costs

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The 50th anniversary of the Apollo 11 mission is being commemorated extensively, including at the White House, where President Trump recognized the crew’s two surviving members. Their conversation included discussion of a new push to travel to the far side of the moon and beyond. Science correspondent Miles O’Brien looks at NASA’s ambitious agenda and how private companies might achieve it first.
PBS NewsHour video.

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Greenland glacier is growing again, NASA says

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Climate Change and Global Warming Fighting
A key Greenland glacier is growing. It had been retreating nearly two miles and thinning 130 feet per year. But a new study by NASA found it started expanding at about the same rate in the past two years. The researchers say it’s because of a temporary cooling of the surrounding ocean. But they say that means the progress will likely be reversed when the waters start to warm again.
“CBS This Morning” USA News – Global Warming

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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.

Midtown Tribune USA New York Political  News Digest

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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.

 PBS NewsHour video

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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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