Generate an explanation for the given claim using the provided supporting material from the paragraph. Please consider the following points while generating an output. 1) The claim will always have supporting proof in the paragraph, and the paragraph will have a clear point of view supporting the claim. 2) There can be instances where direct correlation to the claim is not available. Make use of the sentences in the paragraph to provide a corresponding output supporting the claim. 3) The explanation should be at least one and at most twelve sentences long.

Ex Input:
Paragraph: The Center for Disease Control and Prevention's National Center for Health Statistics said Thursday that the number of U.S. babies born last year fell 2 percent from 2016 to 3.85 million, also a 30-year low. Births have fallen for three straight years. The fertility rate dropped 3 percent last year to 60.2 births per 1,000 women ages 15 through 44. An aging society has already weighed on economic growth in the United States in the past decade, with the vast baby boom generation retiring and fewer young people replacing them. Thursday's data suggests that the trend is likely to continue. Economic growth is generally driven by population growth and worker efficiency, both of which have slowed in the past decade in the United States. Kathy Bostjancic, an economist at Oxford Economics, a consulting firm, said that roughly 10 years ago, the number of Americans working or looking for work was growing about 1 percent annually. With birthrates declining, that figure has since fallen to about a 0.3 percent growth rate. That essentially acts as a 0.7 percentage point drag on the United States' long-run growth. "Demographics have a really powerful impact on the economy," Bostjancic said. The U.S. economy has grown at a 3 percent average annual rate since World War II. Yet it hasn't reached that pace for a full calendar year since 2005. The baby boomers first reached retirement age in 2008. The Federal Reserve in March upgraded its short-term economic growth forecast to about 2.7 percent for this year and 2.4 percent in 2019, partly because of the Trump administration's tax cuts. But the Fed kept its longer-run annual growth forecast at just 1.8 percent, reflecting the demographic headwinds. Aside from fewer workers, an aging society can hold back growth because fewer people are buying homes, cars and other costly purchases. Savings generally rise as people age and prepare for retirement. And as elderly people live longer, they also slow their spending while in retirement, Bostjancic noted. Most economists attribute the low interest rates and low inflation of the past decade, in the United States, Europe and Japan, at least in part to aging. In Japan, where adult diapers outsell those for children, the impact of fewer births has kept growth nearly nonexistent for more than two decades. The economy has picked up recently and enjoyed two straight years of growth, the longest such streak since the late 1980s, before contracting again in the first three months of this year. The U.S. accepts many more immigrants than does Japan, and that influx has boosted population growth. The Labor Department released separate data Thursday showing that last year, there were 27.4 million foreign-born workers in the United States, the most since records began in 2005. Immigrants now make up 17.1 percent of the U.S. workforce. Economic research earlier this year found that U.S. fertility fell sharply roughly nine months before the past three recessions. That suggests that such declines could signal economic downturns. But Kasey Buckles, an economics professor at Notre Dame who conducted the research with two colleagues, said that recent such declines aren't sharp enough to point to a recession. Instead, she noted that fertility declines over the past three years have occurred mostly among women under 30. Birth rates among older women have risen or held steady. That suggests that the fertility declines largely reflect a drop in unwanted pregnancies since the 2008-2009 recession. Fertility among women of all ages fell sharply in 2008 and 2009, Buckles said, but rebounded quickly for women 30 and over. Separate data from the Guttmacher Institute, a policy organization that tracks reproductive health, shows that unwanted pregnancies have fallen since the Great Recession, Buckles said. "It's possible that the Great Recession may have been something of a triggering event that caused people to be more intentional about their fertility," she said. ___ Contact Chris Rugaber on Twitter at http://Twitter.com/ChrisRugaber . Claim: Lowest US birth rate in 3 decades could pose risk to economy.

Ex Output:
Women in the United States gave birth last year at the lowest rate in 30 years, a trend that could weigh on economic growth in the coming decades.

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Paragraph: With global warming widely expected to slash snowfall, especially at lower levels, the Swiss tourism industry is looking for ways to preserve a lucrative business brutally exposed to the weather. Enter Napa, Serbia's last circus bear. The Arosa ski resort in eastern Switzerland has created a $6.5 million refuge hosting Napa and two other bears rescued from cages at restaurants in Albania to help draw summer visitors and reduce its reliance on skiers and snowboarders. School classes, families and a group of army veterans celebrating an 80th birthday were visiting one recent summer day, helping the park toward what Arosa tourism director Pascal Jenny said was a target of 50,000 visitors this year. Arosa has reinvented itself before - moving to winter tourism in the 1930s after decades as a health resort for tuberculosis patients. But with nearly 620,000 overnight stays in winter last year, more than three times the summer total it will not be easy. Jenny, who fears a sharp decline in snowfall over the next 20 or 30 years, is hedging his bets. "What gives us some hope is that artificial snow is making strong technical advances. I can make snow now at 5 degrees above freezing," he said, standing on an observation platform beside the Weisshorn cable car which gives a sweeping view of the snow-capped Alpine valley. His two-pronged approach highlights the dilemma faced by mountain resorts how to retain profits as they embark on what the Organisation for Economic Co-Operation and Development (OECD) says needs to be a global rethink of tourism. "The consequences of climate change will be felt across the travel and tourism sector over the coming decades," the OECD, whose member countries represent 80% of the world's trade and investment, said in a 2018 study of megatrends in tourism. Storms, flooding and tidal surges will threaten coastal regions, southern destinations face extreme heatwaves and northern ones will see shorter periods of snowfall, it said. Mountain resorts tend to be higher in Switzerland than in Austria or France, giving them better chances as snow becomes scarcer. But even at 3,000 meters, pistes could see snow depths more than halved by 2100 if greenhouse gas emissions are not curbed, a report in The Cryosphere, a peer-reviewed geosciences journal named after the frozen water parts of the Earth, said. Resorts below 1,200 meters - as about a quarter of Alpine ones are - might get almost no snow, said the 2017 report, whose title starts "How much can we save?". Snow levels will gradually stabilize if global temperature rises are contained, it says. Arosa is 1,775 meters up but Jenny worries that a loss of snow in the lowlands will cost it visitors because people will lose their emotional connection with snow. "That is almost more dangerous for the sector," he said. Hence his interest in an industrial estate in Denmark, where Arosa is cooperating on a project to make artificial snow so that urban dwellers can learn to ski and then, he hopes, go on to hone their skills in the Alps. The economics are clear: a daily lift pass for skiers in Arosa costs 79 Swiss francs ($80.27), while a summer hiker or mountain biker typically pays 18 francs for a pass that lets them use a rope park, a swimming area and paddle boats on the town's lake. Hotels and restaurants charge more in winter too, but the strong Swiss franc has priced many people out. Switzerland is one of the wealthiest countries in the world, and the Swiss government says the long-term outlook for tourism is healthy. "Mountain summers can position themselves as an alternative to the Mediterranean regions," a 2017 report said. Summer tourism already accounts for 60% of overnight stays across Switzerland, but the season brings in only 18% of revenue, said Therese Lehmann, an economist at the University of Bern's Centre for Regional Development. Government data already shows a 24% drop in skiers in the decade to 2016, with other factors as well as climate change. "The decline of ski tourism a powerful economic engine will have more of an impact than the additional revenue in summer," said Dominik Siegrist, director of the Institute for Landscape and Open Space at Switzerland's University of Applied Sciences Rapperswil. Europe's population is aging and younger people are less interested in skiing. Snowshoeing, winter hiking, sledding and ski touring in which people hike up mountains, are on the increase, industry lobby Swiss Tourism says. Consolidation of winter tourism is on the horizon, with overnight stays in bigger Swiss resorts up 1 percent in the decade to 2015, but down 17 percent in smaller ones. "Lots of smaller ones are grasping at straws, trying to survive as long as they can because the valleys depend on this tourism," Siegrist said. Large resorts in the Swiss cantons of the Grisons and Valais, Austria's Tyrol province and France's Savoie region have the marketing pull to survive, Siegrist said, listing high- altitude Andermatt, Zermatt and St Moritz in Switzerland. The Andermatt Swiss Alps resort, in central Switzerland, is targeting cyclists in summer, and has also built new lifts to lure winter sports fans. It covers a nearby glacier with strips of artificial fleece in spring to help reduce melting and creates piles of snow higher than houses to deploy on ski pistes as early as November to avoid having to use expensive artificial snow. The strong Swiss franc has hit ski lifts focused on winter business from European visitors hard in the past 10 years, the government says, but the minority of lifts with strong summer business are booming thanks to visitors from overseas. Many smaller lift firms get cheap loans and, increasingly, state subsidies to help balance the books, said Lehmann. Roughly a third are debt-free, but depend on long-haul tourism, which she said was not ideal from an environmental point of view, because flights are a major contributor to holiday carbon emissions. "Maybe we have to get away from focusing solely on growth, and promote Alpine areas as good habitats for living, not just for tourism," she said. Listed cable car companies Bergbahnen Engelberg Truebsee Titlis Bet AG (TIBN.S) and Jungfraubahn Holding AG (JFN.S), cite year-round visitors from Asia - especially China and India - as important sources of income. Asked about sustainability, Titlis marketing director Peter Reinle said the firm's prospects were good for the next 50 years. "We as a single entity can not solve the whole climate problem. Politicians have to provide framework conditions." Jungfraubahn's Corporate Secretary Christoph Schlaeppi said it employed 800 local people, helping to make life in the mountains economically sustainable for a new generation. The government says it is up to individual resorts to decide how much they want to attract Asian groups, but focuses its own promotion efforts on individual travelers and sustainability, noting Japanese tourists now come independently and stay longer. "We have to see that guests from Asia making the long flight to Europe or Switzerland stay as long as possible," Richard Kaempf, head of tourism policy at the State Secretariat of Economic Affairs, told Reuters. While the government encourages year-round use of mountain infrastructure, he said it is not giving up on winter sports, a deep cultural touchstone for the Swiss. But he acknowledged the growing challenge of lowlanders losing the "winter feeling". Claim: High and dry: Alpine resorts grapple with climate change.

Ex Output:
The prospect of searing heatwaves driving holidaymakers to cool mountains and children asking grandparents about their memories of snow is focusing minds in Alpine ski resorts on the implications of climate change.

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Paragraph: Big advances in the battles against infectious diseases such as measles, malaria, tuberculosis and polio have continued to extend life expectancy although other factors, such as people's lifestyles, are constraining longevity, the WHO said in its annual statistics report. The longest life expectancy at birth is for baby girls in Japan, at 87.0 years, and boys in Iceland, at 81.2 years. Japan, Switzerland, Singapore, Italy and Luxembourg rank in the top 10 for both sexes. "There are major gains in life expectancy in recent decades and they continue," said Ties Boerma, chief of statistics and information systems at the WHO. The lowest life expectancy is in sub-Saharan Africa, where nine countries have expectancy of less than 55 for babies of both sexes. Lifestyle changes leading to heart problems and other diseases were curbing life expectancy in some cases. "We're seeing a health transition from success in infectious diseases to more people dying, including at younger ages, from non-communicable diseases," said Boerma. However, even in the rich countries where people live longest, there is no sign of life expectancy gains slowing down. "If human life expectancy was capped at population level at around 90 years of life we would expect to see a slowdown as we approach those limits. We're not seeing that," said Colin Mathers, coordinator of WHO's statistics on mortality. For the first time the annual statistics report, the most comprehensive statistical overview of the world's health, measured "years of life lost", a number that takes account of the age when people die as well as the number of deaths, to put more focus on the things that kill more people at a younger age. Years of life lost to diarrhea and respiratory infections, the biggest causes of early deaths in 2000, had fallen by 40 percent and 30 percent respectively by 2012, when ischemic heart disease was the biggest factor in early deaths. Years of life lost to road injuries have also increased by 14 percent between 2000 and 2012 as more people driving in developing countries outweighed gains in road safety elsewhere. Life expectancy at birth has increased in almost every country since 1990, and in almost all cases it was higher in 2012 than in 2011, with Botswana, Cote d'Ivoire and Syria among the exceptions. Another was Pakistan, where life expectancy averaged 65 years in 2012, down from 67 years in last year's report. Mathers said that reduction reflected improved data, which revealed child mortality was 30 percent higher than previously thought. The global average life expectancy for a 60-year-old has also increased, with hope of another 20 years in 2012 instead of 18 years in 1990. But not everywhere. In Russia and several other former Soviet states, life expectancy for a 60-year-old was lower in 2012 than in 1990. Mathers said death rates rose fast in the early 1990s, due to cardiovascular disease and injury, both influenced by high rates of binge drinking. Although the death rates have since improved, they have not yet dropped to pre-1990 levels. Russia's experience surprised epidemiologists who had expected chronic diseases would take a long time to take root. Many countries, especially those recovering from conflict, have also shown that it is possible to make big gains fast. "We've seen in many countries a catch-up, really fast progress," said Boerma. "Examples - Liberia, which has been our fastest catch-up country, but also Rwanda, Cambodia. So if they come out of a crisis with good leadership, there's enormous progress in health." Claim: Global life expectancy rises again, but new challenges loom.

Ex Output:
Average life expectancy has risen globally to 73 years for a girl born in 2012 and 68 for a boy following successes in fighting diseases and child mortality, the World Health Organization said on Thursday.