Even though The World Almanac is the best-selling American reference book of all time, there are still people out there who don't quite know what, exactly, you can find in it. So in the 2007 edition, we added a new feature page that summarizes some of the diverse, interesting facts you can find throughout the book, including some surprising facts, milestone birthdays for 2007, and important trends in the U.S. and around the world. For today, however, we'll keep the focus on our "Number Ones" — the biggest, the best, the worst, and the most popular in just a few of the dozens of different subject areas contained in the book.

Most popular car color in the U.S. .......... silver, more than 20% of new cars
Highest-rated U.S. television show, 2005-06 .......... American Idol, Tuesday night
Top-spending U.S. advertiser in 2005 .......... Procter & Gamble, $4.61 bil
Most prescribed class of drug in the U.S. .......... antidepressants, prescribed 81.2 mil times in 2004
Most popular dog breed in U.S. .......... Labrador retriever, 137,867 new dogs registered in 2005
Leading cause of death in U.S. .......... heart disease, 685,089 deaths (28%) in 2003
Nation with the most vacation days per year .......... Italy, average of 42 days per person
Largest world city .......... Tokyo, 2005 population 35.2 mil
Largest army, by active-duty troop strength .......... China, 2.3 million
Nation hosting the most refugees .......... Pakistan, with 1.1 mil in 2005
Most densely populated U.S. state .......... New Jersey, 1,135 persons per sq. mi.
Most sparsely populated nation .......... Mongolia, 4.7 persons per sq. mi.
Nation with most water per capita .......... Iceland, 582,191.8 cubic meters (U.S. has 10,333)
Developed nations with highest federal tax rate .......... Belgium and Germany, 42%
Nation with highest per capita GDP .......... Luxembourg, $55,600
Highest temperature recorded on Earth .......... 136° F in El Azizia, Libya, 9/13/22
Deadliest natural disaster in U.S. .......... Galveston Hurricane, Sept. 8, 1900; up to 12,000 killed
Most career saves (baseball) .......... Trevor Hoffman, 482 through 2006

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Related: "Unbreakable" Sports Records

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