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The business model of luxury ski areas is again under scrutiny as the perils of climate change take hold in the Rocky Mountains. Kirk Siegler/NPR hide caption

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Kirk Siegler/NPR

Will skiing survive? Resorts struggle through a winter of climate and housing woes

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Wiffle ball sets are seen during an event to showcase American-made products at the White House July 23, 2018 in Washington, DC. BRENDAN SMIALOWSKI/AFP via Getty Images hide caption

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BRENDAN SMIALOWSKI/AFP via Getty Images

The Peculiar Physics Of The Wiffle Ball

Shall we play a game - of Wiffle ball? Invented in 1953, this lightweight alternative to a baseball is perfectly suited for back yard romping. Today we explain why the design of the Wiffle ball guarantees that you don't need a strong arm to throw a variety of pitches.

The Peculiar Physics Of The Wiffle Ball

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The Norwegian Gateway cruise ship is moored at PortMiami on Jan. 7 in Miami. The Centers for Disease Control and Prevention dropped its advisory warning Wednesday for cruise travel after more than two years of warning Americans. Joe Raedle/Getty Images hide caption

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Joe Raedle/Getty Images

'Eee!' Male dolphins whistle to stay in touch with distant ocean pals

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Expedition 66 crew members (left to right) Mark Vande Hei of NASA and cosmonauts Anton Shkaplerov and Pyotr Dubrov of Roscosmos are seen inside their Soyuz MS-19 spacecraft after it landed in a remote area near the town of Zhezkazgan on Wednesday in Zhezkazgan, Kazakhstan. Bill Ingalls/NASA/Getty Images hide caption

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Bill Ingalls/NASA/Getty Images

The Hubble Space Telescope has spotted the farthest star ever seen. The magnified galaxy looks like a stretched out red line with three dots. The single star is the middle one. NASA, ESA, Brian Welch (JHU), Dan Coe (STScI) hide caption

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NASA, ESA, Brian Welch (JHU), Dan Coe (STScI)

The light from this star that astronomers just spotted is 12.9 billion years old

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The FDA has authorized second booster shots for people over 50 and for some people who are immunocompromised. Justin Sullivan/Getty Images hide caption

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Justin Sullivan/Getty Images

Do I really need another booster? The answer depends on age, risk and timing

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An illustration depicting a Jupiter-like exoplanet called TOI-2180 b. It was spotted by community scientists in data from NASA's Transiting Exoplanet Survey Satellite. NASA/JPL-Caltech/R. Hurt hide caption

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NASA/JPL-Caltech/R. Hurt

The Food and Drug Administration has authorized a second booster dose of the either the Moderna or Pfizer-BioNtech COVID-19 vaccine for older people and certain immunocompromised individuals. Emily Elconin/Getty Images hide caption

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Emily Elconin/Getty Images

Sleeping in a room even a little bit of light can hurt a person's health, study shows

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Classroom in Winston-Salem, North Carolina, United States Mint Images/Getty Images hide caption

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Mint Images/Getty Images

Indoor Air Quality is Cool for Schools

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As immunity wanes fom the first booster, the FDA has now authorized a second shot for people 50 and older and some immunocompromised people. The CDC has also recommended that people get the booster. FREDERIC J. BROWN/AFP via Getty Images hide caption

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FREDERIC J. BROWN/AFP via Getty Images

CDC recommends 2nd COVID boosters for some older and immunocompromised people

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