Here is a question about this article: During the years 1940-1955, the rate of decline in the U.S. death rate accelerated from 2% per year to 8% per year, then returned to the historical rate of 2% per year. The dramatic decline in the immediate post-war years has been attributed to the rapid development of new treatments and vaccines for infectious disease that occurred during these years. Vaccine development continued to accelerate, with the most notable achievement of the period being Jonas Salk's 1954 development of the polio vaccine under the funding of the non-profit National Foundation for Infantile Paralysis. The vaccine process was never patented, but was instead given to pharmaceutical companies to manufacture as a low-cost generic. In 1960 Maurice Hilleman of Merck Sharp & Dohme identified the SV40 virus, which was later shown to cause tumors in many mammalian species. It was later determined that SV40 was present as a contaminant in polio vaccine lots that had been administered to 90% of the children in the United States. The contamination appears to have originated both in the original cell stock and in monkey tissue used for production. In 2004 the United States Cancer Institute announced that it had concluded that SV40 is not associated with cancer in people.
What is the answer to this question: Who announced that SV40 was not associated with cancer?
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So... United States Cancer Institute

Here is a question about this article: However questions still remain, as some of the corrupt government officials have still not been brought to justice, while the many families who lost their only child, are still seeking compensation and justice to what had happened. According to the Times, many parents were warned by the government not to stage a protest under the threat of arrest.
What is the answer to this question: What did many families lose in the earthquake?
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So... their only child

Here is a question about this article: The politics pursued by the administrations of heads of government in Mexico City since the second half of the 20th century have usually been more liberal than those of the rest of the country, whether with the support of the federal governmentas was the case with the approval of several comprehensive environmental laws in the 1980sor through laws recently approved by the Legislative Assembly. In April of the same year, the Legislative Assembly expanded provisions on abortions, becoming the first federal entity to expand abortion in Mexico beyond cases of rape and economic reasons, to permit it regardless of the reason should the mother request it before the twelfth week of pregnancy. In December 2009, the Federal District became the first city in Latin America, and one of very few in the world, to legalize same-sex marriage.
What is the answer to this question: What political leaning does Mexico City take?
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So...
more liberal than those of the rest of the country