  | What is the Circumference of the Earth? |            |   ~ 24,902 miles | 
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  | What is the Deepest Ocean Trench? |  |   Marianas Trench (35,397 feet) | 
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  | What is the highest point on earth? |  |   Mt. Everest (29,028 feet) | 
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  | What is the driest inhabited place on earth? |  |   Aswan, Egypt (0.02 inches of rain/annual) | 
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  | What is the wettest inhabited place on earth? |  |   Buenaventura, Columbia (266 inches of rain/annual) | 
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  | What is the least populous country? |  |   Vatican City (1,000 people) | 
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  | What is the most populous country? |  |   China (1,320,000,000 people) | 
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  | What is the largest island? |  |   Greenland (800,000 square miles) | 
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  | What percentage of the world's surface is water? |  |   70% |