Questões Militares de Inglês - Advérbios e conjunções | Adverbs and conjunctions

Are any foods safe to eat anymore? The fears and the facts 48 49 50

    Food was once seen as a source of sustenance and pleasure. Today, the dinner table can instead begin to feel like a minefield. Is bacon really a risk factor of cancer? Will coffee or eggs give you a heart attack? Does wheat contribute to Alzheimer’s disease? Will dairy products clog up your arteries? Worse still, the advice changes continually. As TV-cook Nigella Lawson recently put it: “You can guarantee that what people think will be good for you this year, they won’t next year.”

    This may be somewhat inevitable: evidence-based health advice should be constantly updated as new studies explore the nuances of what we eat and the effects the meals have on our bodies. But when the media (and ill-informed health gurus) exaggerate the results of a study without providing the context, it can lead to unnecessary fears that may, ironically, push you towards less healthy choices.

    The good news is that “next year” you may be pleased to learn that many of your favourite foods are not the ticking time bomb you have been led to believe...

Adapted from http://www.bbc.com/future/story/20151029-are-any-foods-safe-to-eat-anymore-heres-the-truth

As the Olympics Approaches, a Lesson in Overcoming Adversity

Bert R. Mandelbaum, MD

July 20, 2016

      I've known a lot of athletes who qualified for the Olympic Games ,______injuries. But I know of only one who qualified because of an injury.

      Cliff Meidl’s story captures the spirit of the Olympics.

      In November 1986, Cliff, a 20-year-old plumber's apprentice, hit three buried high-voltage electrical cables with a jackhammer. An estimated 30,000 volts surged through his body, exploding bone and cartilage from the inside ail the way up to his head. To put that into perspective, electric chairs use only 1500-2000 volts for executions. So it's safe to say that Cliff should have died.

      And he nearly did. His heart stopped. Paramedics were able to get it going again, but they had to resuscitate him on the way to the hospital.

      As part of a team with renowned plastic surgeon Malcolm Lesavoy, MD, and others, I got to work reconstructing Cliffs legs. Our best hope was to avoid amputation.

      But very quickly, we noticed something else going on - something that had nothing to do with our expertise. Through every step of his painful rehabilitation, Cliff grew more and more determined. He never complained. He just asked, "What's next?"

      Before he had even finished the rehabilitation, Cliff started paddling various watercrafts. The days spent on crutches had already strengthened his upper body, and he took naturally to the sport. The same year in which he was injured, he began competing in canoe and kayak events, and in 1996 he qualified for the Olympics - not the Paralympic Games, the Olympic Games.

      Four years later, in Sydney, Australia, I was overseeing the sports medicine team at the Olympic soccer tournament. I was sitting in the stands during the opening ceremonies when Cliff walked into the Olympic Stadium carrying the Stars and Stripes.

      It's a long-standing tradition for delegations of athletes to select one among their number to bear the flag, and the choice often symbolizes some extraordinary accomplishment. I had no idea that Cliff would be selected. So when he strode into the stadium with a normal gait, I nearly broke down.

      Moments like that reinforce what I have always believed: that sport can bring out the best in us all.

      The Olympic Games (...) are devoted to celebrating the human capacity to improve body, mind, and soul.

      They are about taking part - not necessarily about winning. Cliffs peers in the US delegation of 2000 recognized that when they elected him to bear the nation's colors. He never won a medal at the games, but the spirit with which he overcame adversity inspired all of them.

      The Olympic motto - faster, higher, stronger - can help our patients realize that the real victory is the "win within." The Win Within: Capturing Your Victorious Spirit is the name of the book I wrote to show people that coming back from adversity is part of our heritage - that we as human beings are more adapted to adversity than we are to success.

      Adversity is the engine of unimagined opportunity. It can unleash our energy and stimulate our will. It moves us to succeed. If I don’t have food, I have to go get some. If I’m cold, I have to build a shelter.

      I remind patients who don't participate in sports that they have the heritage of athletes. We all have the genes of pursuit-hunters who survived by running down their prey and running away from their predators. That's why even now, in 2016, when we go out and take a run, we feel good. We get an endorphin surge and our lipids go down. Our hearts and brains become clear.

      The life of sport and sport of life are interlinked. Exercise is our birthright; it's our legacy; it's why we are here.

      We no longer have to fear saber-toothed tigers or cave bears. But when you look today at how people can be successful in 2016, it's by avoiding the predators in our urban life: overeating, inactivity, and smoking. And it's by rising to meet adversity.

(Adapted from http ://www.medscape.com/viewarticle/866279) 

                           How things work: 100 scientific explanations

      Preservation property has always been important to humans. Historians in the ninth century were the first to record the use of varnish, a protective liquid composed of resins, natural oils, and alcohol, among other ingredients. Furniture makers learned that if they painted coats of the stuff on a piece of furniture or wood floor, it made it impervious to liquids and their damage and shielded it from normal wear and tear. And the makers liked the shine furniture had after it was varnished.

      Varnish comes in many formulations. Some are oil based, using linseed or tung oil, while others are water-based. Varnish cures, or dries, on what it’s painted, creating a glossy, clear film on the surface. Some oil-based varnishes can turn to a yellowish color; water-based varieties do not. Wood must be carefully cleaned and sanded before any varnish is applied. Several coats are often required. All varnishes contain resins — terpenes with five-carbon molecules called isoprenes and also include a drying oil or solvent to reduce drying time.

     Although furniture and flooors are still the most frequently varnished items, the wooden hulls of boats are also often varnished. Clear nail polish, a type of varnish, can be used for countless small fixes: dab small amounts to keep splintered wood from snagging, prevent ink from running, and stop buttons on clothing or screws on sunglasses from coming loose.

           (National Geographic Special Publication “How Things Work” Adapted.)