Madeline K. Sofia Madeline Sofia is the host of Short Wave, NPR's daily science podcast.
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How To Start Hormone Replacement Therapy

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Health workers wear personal protective equipment at a Covid-19 testing site outside Parkview Community Hospital Medical Center in Riverside, California. Bing Guan/Bloomberg via Getty Images hide caption

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Pandemic Dispatches From The ER

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You Mite Want To Shower After This

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People who love a good thrill are known in psychology as high sensation seekers. According to psychologist Ken Carter, high sensation seekers produce less cortisol than low sensation seekers in risky situations like white water kayaking. They also seem to produce more dopamine, which is that neurotransmitter that's associated with pleasure. Behrouz Mehri/AFP via Getty Images hide caption

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Behrouz Mehri/AFP via Getty Images

Why A Good Scare Is Sometimes The Right Call

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Dew drops collected on blades of grass in Bangkok, Thailand. Anatthaphon Buangam/Getty Images/EyeEm hide caption

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MIT's Martin Zwierlein works with ultracold atomic gases. Within these glowing clouds of atoms, "superfluid" states of matter form. Zwierlein Ultracold Quantum Gases Group hide caption

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Zwierlein Ultracold Quantum Gases Group

Ultracold Soup - The 'Superfluid' States Of Matter

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Children build sandcastles on Blackpool Beach in England. Anthony Devlin/Getty Images hide caption

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Anthony Devlin/Getty Images

Micro Wave: Build Your Own Sandcastle Dreamhouse

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Facebook Inc. headquarters stands in this aerial photograph taken above Menlo Park, California. Sam Hall/Bloomberg via Getty Images hide caption

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Sam Hall/Bloomberg via Getty Images

The team at work at the excavation site, removing debris using large tools. Paolo Verzone/National Geographic hide caption

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Paolo Verzone/National Geographic

Spinosaurus: The Aquatic Dinosaur

(Encore episode) We chat with National Geographic Explorer and paleontologist Nizar Ibrahim about his team's discovery of the Spinosaurus, the first known swimming dinosaur. The discovery and subsequent modeling showing the effectiveness of the Spinosaurus's tail underwater were detailed in Nature.

Spinosaurus: The Aquatic Dinosaur

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A healthcare worker prepares a dose of the Pfizer-BioNTech Covid-19 vaccine during a vaccination event at a school in Boston, Massachusetts, U.S., on Monday, August 16, 2021. Bloomberg/Bloomberg via Getty Images hide caption

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Bloomberg/Bloomberg via Getty Images

COVID-19 News: A Hospital System Overwhelmed, Booster Shots Update

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