Hanukkah means "rededication," and it commemorates the rededication of the temple of Jerusalem by the Maccabees, a group of Jews who defeated the Syrian Greeks in a three-year war. Source: BBC

The lowest temperature recorded in the world is -129 degrees Fahrenheit in Vostok, Antarctica, measured on July 21, 1983. Source: NOAA

The National Archives has records dating back to 1775. Its holdings include about 9 billion pages of textual records; 7.2 million maps, charts, and architectural drawings; 20 million photographs; billions of machine-readable data sets; and 365,000 reels of film and 110,000 videotapes. Source: NARA

The National Archives and Records Administration keeps 1 percent to 3 percent of all the documents and materials created by the federal government. Source: NARA

On Dec. 8, 1941, one day after the attack on Pearl Harbor, President Franklin D. Roosevelt addressed Congress, saying that Dec. 7 would be "a date which will live in infamy." Source: National Archives

Parts of Washington, Montana, Idaho, Wyoming, Colorado, Minnesota, Wisconsin, New York, Vermont and Maine have a greater than 90 percent probability of having a white Christmas. Source: NOAA 

The greatest daily snowfall on record in the U.S. between 1893 and 2006 is 63 inches, which fell in Georgetown, Colo., on Dec. 4, 1913. Source: NOAA

U.S. imports of Christmas tree ornaments from China totaled $470.3 million between January and August this year. China also shipped $28.6 million worth of artificial Christmas trees during that period. Source: Census Bureau

Between Dec. 1 and Christmas day, the U.S. Postal Service will deliver 16.6 billion cards, letters and packages. Source: USPS

Afghanistan is 652,230 square kilometers, slightly smaller than the state of Texas. Source: CIA World Factbook