April 2012

How World Leaders Measure Up

In the United States, it is almost a matter of dogma that in order to succeed in the business of politics — and especially to reach the Oval Office — a politician must be tall. Height, it is felt, is a reflection of the candidate’s authority and confidence. We wonder: Which of the following major countries has the shortest leader?

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Sizing Up the World’s Freshwater Resources

A basic science fact that every kid learns in school is that almost three-quarters of the earth’s surface is covered by water. Yet it is the supply of “fresh” water that is needed for drinking, growing plants and many other life-sustaining uses. We wonder: How much of the world’s total water supply is fresh water?

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Urban Population Dynamics

In 2008, for the first time in human history, more than half the world’s population lived in urban areas. This shift has profound social, economic, environmental and health consequences. We wonder: Which of the following major countries or continents currently has the lowest level of its population living in cities?

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