Petroleum usage is nearly as controversial as it is necessary for modern life. Learn all about one of Earth's most valuable substances with our petroleum facts.

From the weirdest animals on earth to the mysteries of the Big Bang, our list of interesting facts will make you the most fascinating person in the room.

Great Britain's Queen Elizabeth II has ruled longer than any other monarch in history. Learn more about England's beloved ruler with our Queen Elizabeth facts.

As one of the most beloved trees in the world, the oak tree supports a complex ecosystem that includes us. Explore oak tree facts, history, and trivia.

These top 10 smallest countries may be tiny, but they are big on fun and adventure. Each of these countries offers something to inspire your next getaway.