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NASA's rover Curiosity crawls up the side of Vera Rubin Ridge on Mars' surface in January 2018. Mount Sharp — a 3-mile-high mountain — can be seen in the distance. MSSS/ NASA/JPL-Caltech hide caption

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MSSS/ NASA/JPL-Caltech

Exploring The Mysterious Origins Of Mars' 3-Mile-High Sand Pile

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After scientists screened over 8,000 genes in fruit flies, only one, which hadn't been described before, triggered sleepiness. Andrew Syred/Science Source hide caption

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Andrew Syred/Science Source

Uptick In Butterfly Census Could Be A Fluke, Researchers Caution

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The drugs clonazepam and diazepam are both benzodiazepines; they're better known by the brand names Klonopin and Valium. The drug class also includes Ativan, Librium and Halcion. Bloomberg/Getty Images hide caption

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Bloomberg/Getty Images

As a child on a New York farm, Eben Bayer helped his dad shovel wood chips in the barn. That's where he noticed a stretchy web of fungus that became the basis of his biodegradable packing material. NPR hide caption

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Why Camera Angles And Bias Support Different Opinions

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Why Did So Many Americans Trust Russian Hackers' Election Propaganda?

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A scanning electron micrograph shows microglial cells (yellow) ingesting branched oligodendrocyte cells (purple), a process thought to occur in multiple sclerosis. Oligodendrocytes form insulating myelin sheaths around nerve axons in the central nervous system. Dr. John Zajicek/Science Source hide caption

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Dr. John Zajicek/Science Source

Even something as simple as chopping up food on a regular basis can be enough exercise to help protect older people from showing signs of dementia, a new study suggests. BSIP/UIG/Getty Images hide caption

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BSIP/UIG/Getty Images

Daily Movement — Even Household Chores — May Boost Brain Health In Elderly

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"Feeling better isn't just this selfish, hedonic thing — it actually is fuel. I consider energy from taking care of yourself as essential fuel for the things that matter most in our lives," says Michelle Segar, a psychologist at the University of Michigan who studies how we sustain healthy behaviors like exercise. Saviour Giyorges / EyeEm/Getty Images/EyeEm Premium hide caption

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Saviour Giyorges / EyeEm/Getty Images/EyeEm Premium

From Couch Potato To Fitness Buff: How I Learned To Love Exercise

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Babies of moms who are in the ICU with severe flu have a greater chance of being born premature and underweight. Nenov/Getty Images hide caption

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Severe Flu Raises Risk Of Birth Problems For Pregnant Women, Babies

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