1. The Weddell and Ross Seas continental shelves are believed to hold 50 billion barrels of oil. That's more than double the known reserves in the U.S.
2. The Transantarctic Mountains have deposits of coal, gold, silver, copper, zinc, lead, and tin, but a moratorium on commercial mining is in place in Antarctica through 2048.
3. Antarctica's biggest population center is the U.S.-operated McMurdo Station. In the summer, the community can swell to more than 1,000 people; this past winter, there were just 153.
4. Antarctica's two-letter Internet suffix is ".aq." Internet access is via satellite; a dish on Black Island provides 10-MB-per-second service to McMurdo.
5. Tourism is one of Antarctica's two main industries. Antarctica had 37,858 tourists last year. Most visitors arrived by sea -- a typical 10-day cruise to the region runs from $5,000 to $10,000 per person -- and nearly all landed on the Antarctic Peninsula. No ship carrying more than 500 passengers may land in Antarctica.
6. Fishing is Antarctica's other principal industry. The annual quota for the legal Antarctic krill fishery, centered in the Southern Ocean, is 4 million tons. The tiny crustacean is used to make feed for fish farms and omega-3 oils for health supplements.
7. Illegal fishing takes thousands of tons of seafood from Antarctic waters each year. One prime target in the South Pacific: the toothfish, also known as Chilean sea bass.
8. Antarctica is home to nearly 40 million penguins. The biggest population of the Emperor, the tallest species and star of March of the Penguins, is in the Ross Sea Sector, where more than 80,000 pairs breed.
9. The West Antarctic Ice Sheet Divide is the best place on earth for scientists to harvest ice cores -- cross sections of ancient ice with trapped air bubbles that provide data about the earth's atmospheric history. The longest Antarctic ice core on record: 4,961 feet.
10. The Bentley Subglacial Trench has the lowest elevation of any piece of land on earth, at 2,450 meters below sea level.
11. It's estimated that fewer than 10,000 people have ever visited the South Pole.