"Everybody was expecting these to be positive studies, " says Harlan Krumholz, a cardiologist at Yale Medical School, who wrote one of three perspectives that accompany the studies in the New England Journal.

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All three are perspectives on Iraqi Shiite cleric Muqtada al-Sadr, whose followers have been clashing with security forces in that country for three violent days.

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The item consisted of a personal, authored film by Dr Azzam Tamimi of the Muslim Association of Britain, followed by a discussion among three British Muslims with very different perspectives.

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The Internet offers room for many more perspectives than existed when just three network anchors and the local newspaper told Americans what was happening.

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Because these three time spans capture the urgent, important, and strategic perspectives on tasks that successful people instinctively adopt.

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The three studies appear in the April 21 issue of the journal Environmental Health Perspectives.

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Students aiming for the Cambridge Pre-U Diploma study at least three principal subjects from a choice of 26, complete an independent research report and a "global perspectives" portfolio.

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