The World

For many people in the United States and Canada, Halloween ranks right up there with Christmas, Hanukkah and New Year's. You may be a veteran trick-or-treater, but how much do you really know about this sugar-filled fright fest?

The United States has one of the most sophisticated judicial systems in the world. Every day, courts across the country hear thousands of cases and make important rulings. Find out with the judicial system quiz.

With all of the choices available these days, how can you know what food is best for you? Test your knowledge with this nutrition quiz before you hit the grocery store.

By Josh Clark

You know that fistful of pills you take each morning? Those vitamins are essential ingredients to life. You know they're good for you, but do you know why? Take our quiz on vitamins to see if you know what those pills you pop actually do for you.

By Josh Clark

Presidential candidates spend millions of dollars on ads, trade inflammatory jabs on live television and crisscross the country many times over on their quest for votes. But beyond pulling a lever, punching a card or pressing a button, do you really know how the country's electoral system works?

You may be a whiz in the kitchen, but just how well-versed are you when it comes to the art of cooking? Test your culinary prowess with this cooking quiz.

By Josh Clark & Sharita Sykes

You've got throwing an Oscar party down pat. Your favorite blogs are written by grips, gaffers and set designers. The people who work the box office at three movie theaters know you by name. Think you've got what it takes to pass this movie quiz?

We'll bet you've played a hand or two of poker in your lifetime. But just how well do you know the game? Go all-in on the How Poker Works quiz. Ante up!

Shun college radio? If you love nothing but the Top 40 over and over again, then we've got some trivia for you. See if you know what goes on behind the music with this Pop Music Quiz.

This quiz is able to leap tall buildings in a single bound. Bullets ricochet off its chest (although it ducks when the emptied gun is thrown at it). Test your knowledge of superhuman ability while we stretch your brain to the limits. Pow! Kunk! Whap!

They say that in springtime, a young man's fancy turns to baseball. We probably put it a little differently, but we do agree. Take this quiz on how baseball works and you can find a dose of springtime anytime of the year. Batter up!

Yes, computers can make life easier, but they also can put your private information at risk. Find out how much you know -- or don't know -- about computer security by taking our quiz.

Java is a popular programming language that's relatively easy to use. Are you a programming guru or a novice? Take our quiz to find out.

By Sharita Sykes

According to popular song, Christmas is "the most wonderful time of the year." Christmas serves as a holy day for those who celebrate the holiday and a marketing boon for retail companies. But what's behind the ornaments, trees, presents and fruitcakes that characterize the 25th of December? And where did that date originate?

Get out your party hats and sparklers! New Year's Eve is the night when young and old stay up past midnight to ring in the new year. Fireworks blast off around the globe while bottles of champagne pour a bubbly sea of mirth. What are the different ways people celebrate New Year's, and how can you ensure good luck for the next 12 months?

When your stomach starts growling, do you ever yearn for toasted beetles or sauteed grubs? If those culinary selections turn your stomach, consider the fact that there are more than 1,400 edible insect species. Take the insect quiz for more creepy, crawly insect facts.

By Cristen Conger

Butterflies are like the peacocks of the insect world -- they dazzle with their brightly colored wings and flit delicately among blooming flowers. Yet how do these seemingly dainty bugs survive against the harsh outdoor elements?

By Cristen Conger

Thousands of years ago, domestic dogs split off from wild wolves -- we can still see common behaviors in both animals, such as stalking, hunting and playfulness. But life in a wolf pack is extremely regimented to maximize the chances for survival. Take the wolf quiz and see if you're the leader of the (knowledge) pack.

By Cristen Conger

Monkeys, apes and humans make up the primate animal grouping. Here is where we find our closest genetic relatives that exhibit familiar behaviors, including cultural practices, tool use and language acquisition. What separates primates from lower order animals is and what binds us together? Quit monkeying around and take the primate quiz to find out!

By Cristen Conger

When you think of marine life, you probably think about scaly fish with gills, but there are a variety of aquatic mammals that breathe air. So hold your breath and dive into the marine mammals quiz!

By Cristen Conger

Casinos are like adult playgrounds where you can indulge in one of the ultimate vices -- gambling. Before you put your cash on the line, however, it may serve you to better understand the different types of games you can play. HowStuffWorks will bet you that some answers on the casino games quiz will surprise even the most seasoned card sharks.

When TV sets made their way into American homes in the 1940s, it marked a cultural transformation. According to the Bureau of Labor Statistics, Americans spend more than half their leisure time watching television. So what have we been watching all these years?

Every few years or so, a new type of extreme sport pops up for those people who want to live (and play) close to the edge. Sometimes, that involves jumping out of planes, rolling down hills in giant balls or taking pogo sticks to the next level. Test how extreme your knowledge of these fringe sports is with the extreme sports quiz.

Grab your pigskin because it's time for football trivia. How does the QB make that ball spiral? Wouldn't "handball" make a better name than "football"? Pad up and get on the field ... the football quiz field, that is.

By Sharita Sykes

How much RAM is in your computer? Do you need more? And if you do, how do you know? Take this quiz to learn everything there is to know about RAM, starting with what RAM stands for.