The World

There are many things that people look for in a good catering service. How knowledgeable are you when it comes to catering? Take this quiz and find out!

Some knife skills are easier than others. How knowledgeable are you when it comes to handling a knife? Take this quiz and find out!

Founder (and ultimate computer geek) Bill Gates has become, depending on whom you believe, an embodiment of the American Dream -- or a cautionary tale of corrupting power. How much do you really know about Microsoft?

Breaking a land-speed record with a jet-engine-powered supercar is obviously not in the cards for the average joe. But when you check out this quiz, you'll realize you don't need to be an Air Force pilot or professional athlete to set a world record.

Sometimes it feels like Google is taking over the world. And rumors are always swirling about the next new Google development. Do you know which ones are true?

What tools will get your motor running, get that hole in your wall spackled, or help you fix a leaky pipe? Take this quiz to see if you are a tool-time know-it-all.

By Ryan Johnson

George W. Bush and Barack Obama obviously have strong differences of opinions about many, many things. But check out these quotes about economic matters -- could it be that these two aren't as far apart as we think?

Take our noise-canceling headphones quiz to learn more about the technology behind this cool gadget.

Tree houses are fun and safe if constructed properly. Test your knowledge on tree houses with this tree house quiz at HowStuffWorks.

NASCAR race tracks vary greatly from one another. How knowledgeable are you on NASCAR race tracks? Take this quiz and find out!

Do you know what components are critical to safely and successfully braking your vehicle? Take this quiz to find out now!

Brake light wiring isn't as difficult as it seems. How knowledgeable are you when it comes to brake light wiring? Take this quiz and find out!

As Earth's population continues to rise, wheat plays an increasingly essential role in making sure everyone gets enough to eat. You can find cultivated wheat fields and dishes across the globe. It's time to put your wheat knowledge to the test.

It's a cold winter morning, and you could use a couple more hours of sleep, but your commute awaits. The only thing that rouses you from the warm confines of your down comforter is the prospect of a hot cup of coffee washing down your cold throat.

Water is quite arguably the most important substance on Earth. Its unique properties make it an incredibly versitile tool. Aside from fueling life, it's useful in cleaning, cooking and transportation, just to name a few things.

The lynx is a solitary animal and spends most of its time alone (except during breeding season). Medium-sized cats with long tufted ears and short bobbed tails, lynxes have the largest range of the entire cat family.

By Jennifer Horton

Some days, there's nothing like a good nap, even if you know it might keep you up into the wee hours of the night. Have you ever pondered the secrets of sleep? Take this quiz to learn all about sleep and those little jumping sheep.

Some people pay thousands of dollars to hide the physical effects of aging, but there's no stopping the many changes that affect our bodies as time passes. . Find out how much you know about the often unavoidable symptoms of aging in this quiz.

Product placement, advergaming, commercial jingles...the world of advertising is all around us. See how much you know about it in our Advertising Quiz.

The walrus has many clever adaptations to help it survive and thrive in some of the harshest climates on Earth. You may not be the walrus, but test your knowledge of these toothy creatures in the walrus quiz anyway.

By Jennifer Horton

Since its popularization during the 1990s, the Internet has become a big part of many of our lives. But it's changed a good deal since then -- test how much you know about the Internet.

The third largest land animal, the hippopotamus is one of the most dangerous is aggressive mammals on Earth. Test your knowledge of these hulking beasts with the hippopotamus quiz.

By Jennifer Horton

When you sit at your computer, browsing the Internet, playing video games and running word processors, it's easy to feel like you're in control. But have you ever thought about what really makes your desktop or laptop run?

401(k)plans are one of the most widely used retirement plans. How much do you know about managing yours? Take this quiz to find out.

Banks have come under scrutiny with the tumultuous economy -- they do much more than just hold on to your money for you. Take the quiz and see if you know how banks really work.