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: Scientists said on Wednesday many Tibetans possess a rare variant of a gene involved in carrying oxygen in the blood that they likely inherited from an enigmatic group of extinct humans who interbred with our species tens of thousands of years ago. It enables Tibetans to function well in low oxygen levels at elevations upwards of 15,000 feet (4,500 meters) like the vast high plateau of southwestern China. People without this variant would be apt to develop thick blood, leading to high blood pressure, heart attacks, strokes, low-birth-weight babies and higher infant mortality. This version of the EPAS1 gene is nearly identical to one found in Denisovans, a lineage related to Neanderthals - but is very different from other people today. Denisovans are known from a single finger bone and two teeth found in a Siberian cave. DNA testing on the 41,000-year-old bone indicated Denisovans were distinct from our species and Neanderthals. "Our finding may suggest that the exchange of genes through mating with extinct species may be more important in human evolution than previously thought," said Rasmus Nielsen, a computational biology professor at the University of California, Berkeley and the University of Copenhagen, whose study appears in the journal Nature. Our genome contains residual genetic fragments from other organisms like viruses as well as species like Neanderthals with which early modern humans interbred. The researchers called their study the first to show that a gene from an archaic human species has helped modern humans adjust to different living conditions. "Such exchange of genes with other species may in fact have helped humans adapt to new environments encountered as they spread out of Africa and into the rest of the world," said Nielsen. Asan Ciren, a researcher with China's BGI genomics center, added, "The genetic relationship or blood relationship between modern humans and archaic hominins is a hot topic of the current paleoanthropology." The researchers said early modern humans trekking out of Africa interbred with Denisovans in Eurasia en route to China. Their descendants harbor a tiny percentage of Denisovan DNA. Genetic studies show nearly 90 percent of Tibetans have the high-altitude gene variant, along with a small percentage of Han Chinese, who share a common ancestor with Tibetans. It is seen in no other people. The researchers conducted genetic studies on 40 Tibetans and 40 Han Chinese and performed a statistical analysis showing that the gene variant almost certainly was inherited from the Denisovans. The gene regulates production of hemoglobin, a protein in red blood cells that carries oxygen. It is turned on when blood oxygen levels drop, stimulating more hemoglobin production. At elevations above 13,000 feet (4,000 meters), the common form of the gene boosts hemoglobin and red blood cell production, causing dangerous side effects. The Tibetans' variant increases hemoglobin and red blood cell levels only modestly, sparing them these effects.

A: Gene from extinct human species fortifies high-altitude Tibetans.
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Q: "We don't know yet if the Ebola scare will help either party or be an afterthought in the midterm elections, but liberal blogger Doug Muder argued that confronting Ebola shows that it makes sense to vote Democratic. For Muder, Kentucky Republican Sen. Rand Paul is the poster child for a distinct partisan contrast. ""Ebola points out why we need a fully funded government,"" Muder wrote. ""When there's no immediate threat of disease, government agencies like the CDC look like bureaucratic waste. When Rand Paul put out a 'Tea Party budget' in 2011, it included a big cut in the CDC, and virtually no explanation as to how this would affect its mission."" In this fact-check, we look at whether Paul proposed a ""big cut"" in the Centers for Disease Control and Prevention. Muder had blogged about Paul's budget in 2011. Back then, Muder asked how the CDC would be able to fulfill its mission if, as Paul wanted, its budget was cut by $1.165 billion. We went back to Paul's original budget documents. One posted January 2011 called for the $1.165 billion reduction that Muder mentioned. Paul then assembled a more complete budget plan in May 2011. It would cut the CDC budget by 20 percent from its Fiscal Year 2008 levels. Depending on whether you include special funds to evaluate federal health programs, Congress appropriated between $6.049 billion and $6.375 billion for the CDC in FY 2008. So Rand's 20 percent reduction amounts to either $1.209 billion or $1.275 billion in cuts. That's slightly more than Muder described. Paul wrote in his plan, ""The center is often mentioned in media reports highlighting their lavish accommodations. For example, in 2005, the CDC built a conference center for $106 million, complete with large-screen plasma TVs. They also spent tens of millions of dollars on state-of-the-art anti-gravity seating for employees, as well as luxury furniture. Taxpayers can no longer afford the luxury working atmosphere of the CDC."" That budget plan remains posted on the websiterandpaul2016.com, Paul's Senate re-election website. Brian Darling, a Paul spokesman, agreed that the senator has proposed these cuts in the past, but said that funding and the ability to fight Ebola don't inevitably go hand-in-hand. ""If you look closely at the CDC budget, there are funds that have been wasted on projects that have nothing to do with disease prevention,"" Darling said. Darlingthen noted that Congress has been at least as supportive of the CDC as the Obama administration. Darlingsaid that in an omnibus spending bill, Congress appropriated $6.9 billion for the CDC, about $240 million more than the administration requested. Darlinghighlighted another $88 million for Ebola in a continuing resolution bill approved in September. However, neither action undercuts Muder's point, and Paul voted against both measures. It's important to remember that those bills doled out money across many government agencies, not specifically for the CDC alone. Sometimes reasonable people can quibble over whether a cut is ""big"" or not. In this case, Paul himself called his cuts ""serious""in a 2011 op-ed he penned for the Wall Street Journal. ""My proposal, not surprisingly, has been greeted skeptically in Washington, where serious spending cuts are a rarity,"" Paul wrote. ""But it is a modest proposal when measured against the size of our mounting debt."" Our ruling Muder said that in 2011 Sen. Paul proposed cutting the CDC budget by $1.165 billion. Budget documents confirm that. In fact, Paul's most detailed budget that year would have trimmed CDC spending by slightly more, about $1.2 billion. While the Senate approved two broad spending measures to fund the CDC in 2014, Paul voted against both."

A: "Doug Muder Says Sen. Rand Paul's 2011 budget ""included a big cut in the CDC."
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Q: As the new coronavirus spreads from China, travel guidelines being issued by governments across the world all express notes of growing caution. But they contain subtle differences on where to avoid, how to behave and what to do after a trip. With few exceptions, the prevailing advice of national authorities is to avoid Hubei province - epicenter of an outbreak that has now infected 80,000 people worldwide - and to reduce Chinese travel to the bare minimum. Once inside China, Swiss travelers for example are urged by their government to avoid large gatherings and "cough or sneeze into a tissue, or use the crook of your arm". France tells its nationals not to eat raw meat or visit animal markets. The Spanish Foreign Ministry also urges against contact with animals in China and suggests making sure that you stay at least one meter away from the next person. For travelers to Italy - the country most badly hit by the virus in Europe - the Dutch government recommends that its citizens avoid areas already locked down by local authorities and only travel to parts of the wider Lombardy region around the closed-off towns if necessary. The Finnish Foreign Ministry advice on Italy is simply to "take special care". Differences also emerge in the advice to travelers on their return from an affected area. Germany's main authority for infectious diseases tells those returning with symptoms from outbreak regions in Italy to see a doctor and call prior to their visit. But France asks such people not to visit the doctor but to call emergency services. Britain urges its nationals to "self-isolate" at home if they have been to the areas quarantined by Italy whether or not they have symptoms. The Danish Health Authority currently stipulates no routine quarantine or isolation of people who have traveled to China or other places hit by the outbreak. Countries outside Europe take different stances. Turkey advises against all but essential travel to China but has not yet issued travel advice on Italy. Nigeria has a voluntary two-week self-quarantine in place for all passengers arriving from China or any country with "a major outbreak". Guidance for returning air passengers says "try to avoid" going out but wear a mask if you do.

A:
Coronavirus travel: national advice not all of a piece.
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