Of the main groups of the islands of Oceania (Polynesia, Melanesia, and Micronesia), Polynesia is the largest.

Australia is the world's leading wool producer.

The scientific name for the tailbone is the coccyx.

The Murray River is Australia's longest river that flows year-round.

The term aerobic refers to the presence of oxygen.

Colonial muskets during the War for Independence only shot from 40 to 50 feet. A lucky colonist could get about 2 or 3 shots off before the Redcoats were close enough to use bayonets.

Starfish do not always have 5 legs; they may have from as few as 3 legs to as many as 50 legs.

India's tiger population has dropped from 3,700 in 2002 to only 1,350.

Bucharest, Romania, is often called "the Paris of the East" because of its culture and architecture.

Ukraine is the second-largest European country (after Russia).

The Siberian tiger is the largest living cat in the world.

The word xylophone comes from two Greek words: xylo, meaning wood, and phone, meaning sound.

The purpose of the gallbladder is to hold bile created by your liver.

The stomach's acids break down sugars and starches from carbohydrates the soonest, with proteins taking longer to break down and fats taking the longest, possibly up to six hours.

To keep high sound quality, most radio stations put songs into computer files that are usually around 1 gigabyte in size. The WZZK station in Birmingham, Alabama, has about two terabytes (approximately 2,000 gigabytes) worth of music.

Mikhail Gorbachev's policy of allowing some free enterprise to keep the people from starving was known as Perestroika, a Russian word for restructuring of business.

Russia was named after the Rus Viking tribe.