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.

Example 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.
Example 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.

Example Input: Paragraph: We'll give the story a "N/A" in this category since it makes clear early on that this research is in the earliest of stages, done in an animal model, and says clearly that clinical trials are a future hope. This is way too early to consider costs which, we assume, would be substantial. The story says the stem cell intervention extended the rodents' lives "by 10-15% compared to untreated animals." At another point, it said, "the mice lived longer than controls, typically several months more, an increase of about 15%." The story makes no mention of the potential harms that might arise from this approach. Since this has never been tested in humans, we have no idea what they risks are. The story needed to point this out. Theoretically, the stem cells would have to be delivered into human brains via injections, which would make the intervention incredibly risky and possibly a non-starter. In the original paper, the stem cells were injected into the hypothalamus of the mice using viruses as "vectors." The researchers used lentiviruses, which are used often as vectors for research, but can be deadly in humans. Some discussion of this hurdle also was warranted. The story does a good job at explaining various aspects of the research and depicting the stages through which the research team drew its conclusions. It also is up front about this being animal research, so far untried in humans at even the earliest stages of clinical trials. Of note, the original paper mentions that this study was conducted in very few mice (total of about 20) and only in male mice. That detail would have been useful to include. One thing we wanted to point out that was problematic: The story said "if a similar extension was achieved in humans, a person with a life expectancy of 80 years could live to 92." We have no idea how this may impact humans; the evidence doesn't support that kind of speculation. The story doesn't appear to commit disease mongering, though it could have pointed out that aging in and of itself is not a disease. The story does quote one source unaffiliated with the research and we didn't detect any conflicts of interest. (The paper itself notes that the authors of the study have no conflicts of interests.) The story is all about basic research that suggests an approach that one day might slow, or possibly reverse, the aging process. There are no real alternatives available now to affect the aging process beyond lifestyle choices that might be healthier and appropriate treatments for illnesses that might otherwise shorten lifespans. It's clear from the story that this research is preliminary. The story clearly says, "The next step is to create human neural stem cells in the lab for testing." It also states that, "Researchers at Albert Einstein College of Medicine in New York hope to launch clinical trials of the procedure soon, but must first produce supplies of human neural stem cells in the lab which can be implanted into volunteers." The story heralds this research as a "tour de force" and a "breakthrough." Yet is it accurate in a news story to call anything done in animals a "breakthrough?" That word implies relevance to humans, and this is far from established in a mouse study. Studies in mice are essential but many of them fail to show similar evidence in humans. Likewise, stem cell research is often seen as a magic bullet for some conditions but there have been few cases where the preliminary hope/hype has born out. The story does not appear to rely on a news release. Claim: Stem cell brain implants could 'slow ageing and extend life', study shows
Example Output: This story describes some interesting but very early research into the mechanisms of aging and how they might be altered. The story made it clear that this was mouse-level research and has several hurdles to go before it's ever tested in people. One weak point for the story was how the story assumed there might be benefits in people yet overlooked the potential risks. Considering this intervention involves inserting stem cells into the brain via the assistance of a viral strain known to be harmful to humans, it's logical to assume there could be some safety concerns. It also overplayed the novelty here by quoting an expert who called it a "tour de force" and a "breakthrough." The desire to somehow combat aging seems inherent in humans. If there is a fairly straightforward "switch" that can control the aging process and this story suggests so then this would be a major advance. Yet we are looking at decades before this becomes a rigorous Phase III human trial, let alone a potential intervention in humans. The bottom line is: We are talking about approximately 20 male mice.

Example Input: Paragraph: The Hoosier Environmental Council and Improving Kids' Environment announced their merger Thursday. Both Indianapolis-based nonprofits will come under the banner of the Hoosier Environmental Council, which has been Indiana's leading environmental health advocate for more than 36 years. Improving Kids' Environment worked for two decades to reduce toxic risks to Indiana children from lead, pesticides and other sources. Jesse Kharbanda is the council's executive director. He says the merger "enables our combined organization to better tackle remaining challenges." He says their focus will now be on three children's health initiatives, including reducing childhood lead poisoning and decreasing bacterial pollution so kids have clean drinking water and streams to play in. Claim: 2 Indiana environmental groups merge, plan kids' health push.
Example Output:
Two longtime Indiana environmental groups have merged and drafted plans for a refocused mission on children's environmental and health initiatives.