For Riis, the slum's biggest problem wasn't population density, lack of sunlight or even disease.
If births don't add to the population, and immigration isn't the whole story, accounting for around half of net population growth, where does the rest of America's growth come from?
"There is no hope for anything if you don't have a population that buys into" a strong and free society, he says.
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"It signals to us that the source (of the caffeine) really isn't the high population centers, possibly because they are on wastewater treatment plants, " Granek told CNN.
"They don't make the population immune, but they buy you time, either by preventing influenza from getting into the community or slowing down the spread, " Markel said.
The urban poor living in such settlements under terrible conditions of squalor, crime, and insecurity now make up 30-40%t of the population of cities such as Manila, Jakarta, Mexico City, and Lagos.
Because the sample isn't representative of the general population, the results don't necessarily apply to young people in general.
This means there isn't a control method in their population as they won't run out of food or habitat.
Much of the Hong Kong waterfront is land reclaimed from the sea, but reclamation can't keep up with population.
There's not a waterway in Ireland that doesn't have a mink population.
In addition, despite the fact that the Netherlands doesn't have a huge population, they are one of our most important trading partners.
The task is complicated by the fact that there isn't one monolithic polar bear population.
More than half of the world's population doesn't use the Web, particularly in developing nations, researchers say.
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's transient population isn't as devoted to its teams as fans in other cities are to theirs.
Democrats have totally shut out the Republicans' ideas, and their plan will fail because you can't have half the US population totally in disagreement.
The written word, however, only emerged about 5, 000 years ago, and until World War II over half the world's population couldn't read or write.
That is partly because the carrier rate for Tay-Sachs in the Irish population hasn't been scientifically proved, she says, adding that the current U.S. study is expected to provide data on the risk faced by people of Irish ancestry.
Truth be told, most Facebook users won't give a hoot, the same way that the flurry over the Beacon advertising program in late 2007 was fueled by a few vocal privacy advocates while the general population didn't seem to care about it one way or the other.
But Ms. Okot said those responses don't represent the views of the population as a whole.
But such trials typically have strict enrollment criteria and findings often can't be generalized to the broader population.
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Answer: Typically, the segments of the population who aren't online 24-7--and who, as it happens, are often much less well-off.
Japan's graying population just can't knock back beer like it used to.
More serious medical problems weren't seen in the overall trial population.
It also said Israel must comply with the Fourth Geneva Convention, which states that occupying powers shouldn't transfer parts of its civilian population into territory it occupies.
In 2008, Greensboro had higher-than-average pollen counts, its residents were taking more allergy medications, and the city didn't have enough allergists for its population, according to the report.
Secretary-General Kofi Annan from solemnly intoning that the real task is get the Net into the hands of that majority of the world's population that hasn't never even made a telephone call.
"I think it's about creating a momentum that says this isn't a part of our life in Wales - creating the sense it isn't normal to be a smoking population, " she said.
Palin also proved she inherited President Bush's gift for sprinkling speeches with Biblical references -- like her claim of a "servant's heart" -- that won't register with much of the population, but resonate deeply with evangelicals.
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Population flows aren't so cyclical, and public works nearly always follow. (And these, too, need refurbishment.) James Kitzmiller, chief executive of the aggregates side, loves what he calls the fishhook--lower-tier states from California to the Carolinas, and up through an industrial middle by way of Kentucky.
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