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Mary Roach

Packing for Mars

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What happens to you when you can’t walk for a year? When you can’t have sex? Or smell flowers? What happens if you vomit in your helmet during a space walk? Is it possible to survive a bailout at 17,000 miles an hour? Space is a world devoid of the things we need to live and thrive: air, gravity, hot showers, fresh veg, privacy, beer. To answer these questions, space agencies set up all manner of quizzical and startlingly bizarre space simulations, and as Mary Roach discovers, it’s possible to preview space without ever leaving Earth. Packing for Mars takes us on a surreally entertaining voyage into the science of life in space and space on Earth.
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    Мариcompartió su opiniónhace 3 años
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    What a great book! Not only is it full of interesting information, it is also absolutely hilarious! Highly recommend!

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    Мариcompartió una citahace 3 años
    Animal protein and fat have the highest digestibility of any foods on Earth. The better the cut, the more thoroughly the meat is digested and absorbed—to the point where there’s almost nothing to egest (opposite of ingest). “For high-quality beef, pork, chicken, or fish, digestibility is about ninety percent,” says George Fahey, professor of animal and nutritional sciences at the University of Illinois at Urbana-Champaign.
    Мариcompartió una citahace 3 años
    Being a Mercury astronaut must have been like being trapped in the sauces aisle of a very small grocery store.
    Мариcompartió una citahace 3 años
    Contractions play an important role in a newborn’s adjustment to life outside the womb. The compressions of vaginal birth cause a huge release of stress hormones in the fetus; these are the same fight-or-flight hormones that fuel feats of extreme strength in adults. “This hormonal surge appears to be very important for getting physiological systems moving. All of a sudden a newborn has to breathe on its own, it has to figure out how to suckle from a nipple. If there aren’t enough contractions, the hormone release is smaller and the fetus has a harder time.” Studies have shown that infants born via planned C-section, with no contractions—as compared to those delivered vaginally—have a higher risk of respiratory distress and high blood pressure, a harder time expelling lung fluids, and delayed neurodevelopment. In other words, stressing an infant appears to be part of nature’s plan. (For this reason, Ronca is also not an advocate of water births.)

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