The World

Buying a home can be both thrilling and frustrating, but knowing how the process works beforehand will give you a leg up in your search. Take the House Buying Quiz to see how much you know.

Do you know the ins and outs of investing and managing your retirement plan? Take the Investing Quiz and find out!

There's no place like home ... for dangerous health hazards. Although we may strive to protect mother nature from pollution, it turns out indoor air might be more polluted than outdoor air. What don't you know about the dangers in your home?

By Jane McGrath

The topic of murder stirs up fear in almost any context, and serial killing tends to multiply that fear to the nth degree. Test your knowledge with this serial killer quiz.

Chances are, if you've done even the slightest bit of traveling, you've crossed your fair share of bridges. These feats of engineering can span anything from a trickling stream to a raging river. Can you cross the bridge quiz without falling?

Although it ended more than a century ago, the scars of the Civil War are still with Americans today. Think you know more than the average Billy Yank or Johnny Reb about the blood and politics behind the war? Find out by taking our Civil War quiz.

By Bambi Turner & Sharita Sykes

What do vegetable oil, corn and salt water have in common? They're all potential fuel sources for our cars. See how much you know about the next generation of biofuels in our Biofuel Quiz.

Would you know how to survive if you were lost or wounded in the wilderness? What if it was really cold? What if you were in the searing heat of the desert? Each survival scenario is different and requires unique skills. Let's see what you've got.

By Sharita Sykes

On virtually every computer available, the basic input/output system, or BIOS, makes sure all the other components function together smoothly. Without BIOS, you wouldn't be able to load your operating system. How much do you know about BIOS?

Usually, differentials are where a car's power makes its last stop before spinning the wheels. They also enable those wheels to rotate at different speeds. Find out how well your wheels are spinning with the differential quiz.

Most of us couldn't live without our coffee maker, let alone our fridge or -- perish the thought -- even our toilet. These spoils of modern civilization are truly marvels of technology.

By Jane McGrath

You probably don't give much thought to those little wheels that get you from point A to point B, but tires are key components of a vehicle's performance. Take the tire quiz to find out how much you know about tires.

Exotic cars inspire a legion of car enthusiasts to empty their wallets for a taste of life in the fast lane. Will you be at the front of the pack after racing through the exotic car quiz?

Thousands of people are involved in car crashes each day. There are a number of things you can do to reduce the risks involved with riding in automobiles. Find out if you're a car-safety whiz or a crash test dummy in this quiz.

From Grand Prix dirt bikes to high-end models with built-in navigation systems, motorcycles appeal to a wide range of folks. All you easy riders rev up your engines and test your knowledge with the motorcycle quiz.

Learning to ride a bicycle seems to be a universal experience for children around the world. Whether you've been riding bicycles since you were a child or just recently started pedaling, how much do you know about this elegant and simple vehicle?

Beacons of hope in the darkness, lighthouses have guided sailors to safety for thousands of years. They've helped ships navigate dangerous coasts and survive treacherous storms. Test your knowledge of these structures with the lighthouse quiz.

Plants provide us with oxygen, food, beauty, fragrance and medicine. But plants can also kill. You may even have deadly varieties right outside your kitchen window. Find out how much you know about poisonous plants in this quiz.

Being stranded in the wilderness may make for a good movie, but in reality, it's a harrowing experience. Staying alive may require you to build a shelter, start a fire and even eat bugs for nourishment. Can you survive this quiz?

By Sharita Sykes

A vampire is headed straight for you. "I vant to drink your blood," he hisses. To prevent him from sucking the life force straight out of you, you decide to distract him with your amazing knowledge of blood. Take the quiz and prove yourself.

By Sharita Sykes

The heart is a pump, and like other pumps, break down and need repair. And it does break down for many people -- heart disease is the leading cause of death in the United States. How much do you know about the dangers that threaten it?

By Sharita Sykes

You can't avoid stress -- it's everywhere! And no matter the source of your stress, it's doing certain things to your body. Take this quiz to find out what's going on when stress sets in.

By Sharita Sykes

Right now, your computer has an array of tiny files that are keeping tabs on you. Test your knowledge of Internet cookies, one of the most misunderstood aspects of the Internet.

Diets: You've tried them all, with mixed results. At least you know all about diets ... or do you? Test your diet IQ with this weight loss quiz.

By Josh Clark

The Federal Bureau of Investigation, the most powerful government agency in the United States, inspires both awe and fear. Test your own sleuthing power with the FBI quiz.