Given a paragraph, generate a claim that is supported by the given paragraph. 1) The claim must contain information from within the paragraph. 2) A sentence within the paragraph can be used as a claim. 3) The claim should not have contradictions within the paragraph. 4) The claim should be at most one sentence long.

Q: Studying the DNA of two distant bat species, the scientists discovered how genes dealing with the bats’ immune system had undergone the most rapid change. This may explain why they are relatively free of disease and live exceptionally long lives compared with other mammals of similar size, such as the rat, said Professor Lin-Fa Wang, an infectious disease expert at the Duke-NUS Graduate Medical School in Singapore who led the multi-centre study. “We are not saying bats never get sick or never get infections. What we are saying is they handle infections a lot better,” Wang said in a telephone interview. What was missing from both species of bats was a gene segment known to trigger extreme, and potentially fatal, immune reactions to infections, called the cytokine storm. Cytokine storms end up killing not only offending viruses in the body, but the host’s own cells and tissues too. “Viruses rarely kill the host. The killing comes from the host’s immune response. So it looks like what bats are doing is depress the inflammation (cytokine storm). If we can learn that, we can design drugs to minimize the inflammation damage and control viral infection,” Wang said. The study, which saw the participation of researchers from China, Denmark, Australia and the United States, was published on Friday in the journal Science. Compared with other mammals of similar size, bats live a long time, with lifespans of between 20 and 40 years. Rats live between 2 and 3 years, on average. Interestingly, Wang and his colleagues found that the highly evolved genes that give bats their superior immune system also enable them to fly. Out of more than 5,000 types of mammals on the planet, bats are the only one capable of sustained flight and some species can fly more than 1,000 km in a single night. Such intense physical exertion is known to produce toxic “free radicals” that cause tissue damage and it is these same genes that give the bat the ability to repair itself, Wang said. “What we found was the genes that evolved fastest were genes involved in repairing DNA damage. That makes sense ... because when you fly, metabolism goes up and it generates free radicals that are toxic to cells,” Wang said. “Because bats fly, they (would have had) to evolve and adapt ... to get genes that can repair DNA damage.”  Wang said we have much to learn from the bat, which has evolved to avoid disease and live exceptionally long lives. “Cancer, ageing and infectious disease, these are the three major areas of concern for people,” he said. “We have studied rats for 150 years to understand how to do better in these three areas. Now we have a system, the bat, that has done very well in evolution. We can learn from the bat. With modern techniques, we can design new drugs to slow down the ageing process, treat cancer, fight infections.”

A: Long-lived bats offer clues on diseases, aging.
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Q: "Liquid chocolate is prepared in the workshop of the ""Felicitas"" chocolate shop in Hornow, south of Berlin, December 2, 2009. REUTERS/Fabrizio Bensch The study, which combined the results of 42 smaller studies and was published in the American Journal of Clinical Nutrition, also found that participants had small improvements in blood vessel function and a dip in their insulin levels. A number of past studies have found that chocolate lovers seem to have lower rates of certain heart risks, such as high blood pressure. “My take-away message would be that if people like dark chocolate, then eating a little in place of other ‘treat’ foods is fine, and may be beneficial,” said study leader Lee Hooper, at Norwich Medical School in the UK. “However, the evidence is not yet good enough to suggest that we should all be doing this.”   She cautioned that the studies involved were neither large enough nor long enough to show whether eating chocolate has any effect on a person’s risk of having a heart attack or stroke. In contrast to past studies, which were largely observational and couldn’t prove cause-and-effect — that chocolate itself caused the changes — the current study focused on clinical trials, where researchers assigned people to eat chocolate or not and then watched for changes in blood pressure, cholesterol and other heart risk factors. Hooper and her team pooled data from 42 small clinical trials involving about 1,300 people and found that chocolate eaters had a few points knocked off their blood pressure readings, along with lower insulin levels and other benefits. Though it’s not clear why chocolate has this affect, it’s believed to be due to compounds known as flavonoids, which are also present in foods such as nuts, soy, tea and wine. But researchers acknowledged shortcomings in their study, including differences in the people involved in the trials — some healthy, some with chronic health problems — and different ways of testing chocolate’s effects. Some studies used cocoa drinks, some solid chocolate and some cocoa supplements. They also varied in how long people were “treated,” though most trials lasted less than six weeks. The biggest question may be whether any benefits would be worth the downside of chocolate. Based on the studies they used, Hooper’s team writes, it could take several hundred calories’ worth of chocolate to see effects on insulin and blood vessel function — and that could mean trouble for your waistline. “From a practical perspective it is premature to advise individuals to consume chocolate or cocoa to decrease their risk of cardiovascular disease,” said Alice Lichtenstein, director of the cardiovascular nutrition lab at Tufts University in Boston, who was not part of the study. For now, she added, if you enjoy a little chocolate in your life, you can probably keep doing so. Just don’t add it in the hopes of helping your heart."

A: Chocolate may be good for your heart: study.
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Q: Serge Haroche of France and American David Wineland, both 68, found ways to manipulate the very smallest particles of matter and light to observe strange behavior that previously could only be imagined in equations and thought experiments. Wineland once described his own work as a “parlor trick” that performed the seemingly magical feat of putting an object in two places at once. Other scientists praised the achievements as bringing to life the wildest dreams of science fiction. “The Nobel laureates have opened the door to a new era of experimentation with quantum physics by demonstrating the direct observation of individual quantum particles without destroying them,” said the Royal Swedish Academy of Sciences, which awarded them the 8 million crown ($1.2 million) prize. “Perhaps the quantum computer will change our everyday lives in this century in the same radical way as the classical computer did in the last century.”  Haroche said he was walking in the street with his wife when he recognized the Swedish country code on the incoming call to inform him of the award. “I saw the area code 46, then I sat down,” he told reporters in Sweden by telephone. “First I called my children, then I called my closest colleagues, without whom I would never have won this prize,” he said. Asked how he would celebrate, he said: “I will have champagne, of course.”  He told Reuters he hoped the prize would give him a platform “that will allow me to communicate ideas, not just in this field of research but for research in general, fundamental research”. Wineland was asleep at home in Boulder, Colorado, when the phone call from Stockholm arrived before dawn on Tuesday morning, he said at a press conference. (His wife answered.) Physics is the second of this year’s crop of awards; scientists from Britain and Japan shared the first prize on Monday, in medicine, for adult stem cell research. The prizes, which reward achievements in science, literature and peace, were first awarded in 1901 in accordance with the will of Swedish dynamite millionaire Alfred Nobel. “This year’s Nobel Prize recognizes some of the most incredible experimental tests of the weirder aspects of quantum mechanics,” said Jim Al-Khalili, professor of physics at the University of Surrey in Britain. “Until the last decade or two, some of these results were nothing more than ideas in science fiction or, at best, the wilder imaginations of quantum physicists. Wineland and Haroche and their teams have shown just how strange the quantum world really is and opened up the potential for new technologies undreamt of not so long ago.”  Quantum physics studies the behavior of the fundamental building blocks of the universe at a scale smaller than atoms, when tiny particles act in strange ways that can only be described with advanced mathematics. Researchers have long dreamt of building “quantum computers” that would operate using that mathematics - able to conduct far more complicated calculations and hold vastly more data than classical computers. But they could only be built if the behavior of individual particles could be observed. “Single particles are not easily isolated from their surrounding environment, and they lose their mysterious quantum properties as soon as they interact with the outside world,” the Nobel committee explained. “Through their ingenious laboratory methods Haroche and Wineland, together with their research groups, have managed to measure and control very fragile quantum states, which were previously thought inaccessible for direct observation. The new methods allow them to examine, control and count the particles.”  Both scientists work in the field of quantum optics, studying the fundamental interactions between light and matter. The Nobel committee said they used opposite approaches to the same problem: Wineland uses light particles - or photons - to measure and control particles of matter - electrons - while Haroche uses electrons to control and measure photons. In one of the strange properties of quantum mechanics, tiny particles act as if they are simultaneously in two locations, based on the likelihood that they would be found at either, known as a “superposition.”  It was long thought that it would be impossible to demonstrate this in a lab. But Wineland’s “parlor trick” was to hit an atom with laser light, which according to quantum theory had a 50 percent chance of moving it, and observe the atom at two different locations, 80 billionths of a meter apart. In a normal computer, a switch must either be on or off. A quantum computer would work with switches that, like the particles in Wineland’s experiment, behaved as if they were in more than one position at the same time. An example is a computer trying to work out the shortest route around town for a travelling salesman. A traditional computer might try every possible route and then choose the shortest. A quantum computer could do the calculation in one step, as if the salesman travelled each route simultaneously. Wineland is a dedicated experimentalist, not bothered by the bizarre philosophical implications of quantum mechanics, such as the notion that reality does not exist until an observer measures it. “You can find debate on this, but I’m not sure we’re so special in the universe” as to have the power to bring reality into being, he told Reuters. His realism extends to applications of his work. “I wouldn’t recommend anybody buy stock in a quantum computing company,” Wineland told reporters, but he said he was optimistic that it might be possible to build one eventually. He plans to be part of the quest. Asked if his science career was nearing an end, he said he had no plans to retire “until they drag me out of here for being too old”. ($1 = 6.6125 Swedish crowns)

A:
"Nobel for quantum ""parlor trick"" that could make super computers."
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