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Science  19 Sep 2008:
Vol. 321, Issue 5896, pp. 1605
DOI: 10.1126/science.1162924

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More than half of the increase in U.S. gross domestic product (GDP) has been attributed to advancements in science, technology, and innovation. The solution to many of America's, and the world's, greatest challenges depends on advancements in science and technology--including providing energy, preserving the environment, supplying food and water, ensuring physical security, providing health care, and improving the global standard of living.