Around the world, it is often assumed that Americans are, on average, the world's richest people. But is that really so? We wonder: Which of the following countries has the world's highest level of annual per capita income?
In the United States in particular, it is almost political dogma that, in order to succeed in politics — and especially to reach the Oval Office — a politician must be tall to project an aura of authority and confidence. We wonder: Which of the following major countries has the shortest leader?
Many people realize that the population of cities, especially in emerging markets, is growing by leaps and bounds. But what about their economies? We wonder: Which city dominates its national economy the most — measured in terms of the city's share of the country's total GDP?
The world's population of 6.7 billion is still on the rise. In fact, by 2050, 36% more people are expected to live on earth than in 2008. We wonder: How much does the world population currently grow each year? It is equivalent to adding an entire country the size of…
Oil has long been crucial to Mexico's economy. While it is less important today than in the past, oil still accounts for about 40% of government revenues. However, Cantarell, the world's third-largest oil field, is now facing an uncertain future. We wonder: Which of the following are true about Mexico's most important oil field?