Want to see some cool NASA technology? Just look up. No, you don't need a telescope, but you might want to use a ladder. Not only has the space agency sent Americans to the moon, but it also helped put some useful gear into your attic, as well.

Is there life after death? Explore these near death experience videos and learn about the science behind the dying process.

Which photos are the strangest? The funniest? The most awesome? Vote for your favorites, or submit your own photos for a chance to win an iPad on June 1.

It's all sunshine and smiles when you're snapping away in the daylight. Could a night-vision camera help you unearth a darker and different side of photography?

The phenomenon and effects of plate tectonics have literally changed the world. Take a look at the forces under our feet and how they can form mountains and trigger earthquakes.

As Benjamin Franklin once quipped: "There never was a good war or a bad peace." That's why these five countries have gotten out of the military business entirely.

How do leopards hide their kills? How does the Australian jumping spider trick its prey? Check out this Animal Planet series to learn more about the "tricks of the trade" that animals across the world use to survive.

Imagine walking through a field and stumbling upon scads of corpses, all in various states of decomposition. It's not the setting for your next nightmare, but rather a very real discipline of forensic anthropology. Get the scoop in How Body Farms Work.

Could you win a fight with a giant squid? How do modern-day vampires get their fangs? Where is Bigfoot, anyway? Find out the science behind your favorite monsters in these clips.

Computers can make calculations faster than the human brain. But thinking and calculating are two different things. Can computers be programmed to think for themselves better and faster than we can?

Do you know what it takes to build the ultimate race car? Roll up your sleeves and learn about aerodynamics, carbon fiber and engine technologies that make fast, winning machines.

In an era of constant innovation and discovery, we may not realize that most inventions take years to develop. But sometimes, all it takes is an accident. Here, 10 inventions we'd never be able to enjoy if not for an apparent mistake.

Who was the greatest inventor of all time? Votes are in! Out of sixteen superstar inventors, see who came in first.

Pop principles about love often end up on the chopping block, but classic wisdom about happily-ever-after may not be so spot-on, either. Which time-honored, love-related truisms break down when put under the microscope?

In the battles of the sexes, do brains matter? Learn about brain gender, teenage brains, aging brains and if you could function with only half of the matter between your ears.

Do you check your horoscope compulsively, or snort derisively at the very thought? Before you dismiss astrology as nonsense, consider this: It has a long history with timekeeping. We're happy to tell you all about it.

Not all world records involve a stopwatch. See these people cover themselves in bugs, get extreme on unicycles and create huge geysers using breath mints and soda – all for a chance at getting into the history books.

The recently reported $2 billion loss at JPMorgan was a result of risky investing in credit default swaps. While some investments consistently make money, others -- like the ones on this list -- stand a greater chance of losing it.

Astrophysicist, cosmologist, lecturer, cartoon voice actor, author, parent, grandparent -- Stephen Hawking wears many hats, and he also has a few ideas about black holes, time, aliens and wormholes.

A new AP-CNBC poll has found that 59 percent of people don't trust Facebook to keep their information private. Are these concerns valid?

What are the odds you'll be struck by lightning? Become a millionaire? Be in a plane crash? Find out with these videos.

Yahoo CEO Scott Thompson resigned last weekend after it was discovered that he listed a degree on his résumé that he didn't really have. Most of us know how to write a résumé, but you'd be surprised at the unnecessary information that people place on them.

What goes on inside the mind of a serial killer? What motivates a stalker? What prevents criminals from feeling remorse? Learn about criminal psychology in these videos.

Graduation is just around the corner, and many new graduates want to get out and see the world. What if you could travel the world and get paid for it? Sound too good to be true? Here are 10 careers designed to satisfy anyone's wanderlust.

Learn about the science behind surreal and supernatural phenomena, from alien hand syndrome to zombies, in these videos from Stuff You Should Know and Stuff They Don't Want You to Know.

Google has acquired a license to operate self-driving cars -- just one of the technologies on our list. One down, four to go. What else is in store for future cars?

How can meditation help a fighter? How does the U.S. Army use ancient martial arts techniques? How can basic karate moves help you defend yourself against attackers? Learn about the many martial arts disciplines in these videos.

Can humans cause earthquakes? What the heck is alien hand syndrome? Join Chuck and Josh as they explore the some of the coolest (and weirdest) Stuff You Should Know in their television shorts on Science.

Each year, natural disasters cause billions of dollars' worth of damage around the globe -- but how do they actually work? Learn more about everything from avalanches to volcanoes and floods in this comprehensive Discovery series.

From UFOs to psychic powers and government conspiracies, history is riddled with unexplained events. Get a closer look at the Stuff They Don't Want You to Know in these videos.

Sure, you might have what it takes to be a pilot, but what about walking on the wings of a plane while you're still in the air? Learn about all things airplane, from daredevils to spy planes to speed records.

Explore Europe's rich history and culture, from Stonehenge to the Tour de France, with the hosts of The Coolest Stuff on the Planet.

Watch when catastrophe strikes and mighty machines are obliterated in these incredible clips from Discovery's 'Destroyed in Seconds.'

Whether they run on oil or alternative power, engines make the world go 'round. This playlist examines various engines up-close, from the rotary engine to two stroke engines and more.

Monsters. Rainbows. Magnets. Volcanoes. Kids love 'em. (We do, too.) These videos showcase a variety of wild, weird and fascinating topics to make your offspring's’ jaws drop.

The unique continent of Australia is home to astonishing wildlife and an ancient Aboriginal culture. Learn about everything from marsupials to the Dreaming in this playlist.

Which is tougher: A hippo or a bull shark? Who would win in a fight between a crocodile and a bear? Get an up-close look at some of nature's most shocking animal fights in this playlist.

Grizzly bears are ferocious wild animals with mighty claws and jaws. What happens when you cross a grizzly -- and how can you survive the attack? Learn about these fascinating creatures in these videos.

We've all heard about how the Industrial Revolution changed the world and launched a new age in human civilization -- but how did it happen, exactly, and why? Tune in to learn more.

Although the claims regarding Queen Victoria's father remain controversial, some compelling medical facts might sway skeptics. In these clips, Ben and PopStuff's Holly Frey explore how this possible illegitimacy may have affected the royal family.

Learn about the origins and evolution of some of your favorite pop culture icons, from the teeny bikini and the Rubik's Cube to Zorro and the Karate Kid, with these videos from Stuff You Should Know and The Stuff of Genius.

The HowStuffWorks podcasts get to the bottom of mysterious occurrences and rituals from around the world.

Whether it’s the flexible straw or the search engine, every invention has a story. Get a closer look at the inventors responsible from everything to dishwashers to dynamite in this animated series by HowStuffWorks.com.

The video game revolution has been under way for decades, progressing from simple amusements created in the 1950s to an all-pervasive force in today's popular culture that rivals film and television. Explore the past, present and future of video games in these clips.

Have you ever wondered how much that beat-up car on the side of the road might be worth? Check out this Wrecks to Riches playlist to learn more about car restoration, auctions and more.

Unidentified flying objects -- or UFOs -- have a controversial reputation. Check out this playlist to learn more about UFO sightings and the search for alien life.

From religion in space to digital immortality, the future is full of profound challenges and astonishing opportunities. Join the staff of HowStuffWorks.com as we explore some of the most promising -- and perplexing -- global issues of the future.

Join Tamara Myers as she explores a wealth of DIY home improvement and construction projects in this playlist by Discovery.

Are there dead animals floating through space? What is the Lunar Doomsday Ark? Learn the answers to these questions and more as the HowStuffWorks team explores the topic of outer space.

How do leopards hide their kills? How does the Australian jumping spider trick its prey? Check out this Animal Planet series to learn more about the "tricks of the trade" that animals across the world use to survive.

What's on the inside of a bowling ball? How are racing wheelchairs built? Discover the answers to these questions and more in this playlist.

Could you win a fight with a giant squid? How do modern-day vampires get their fangs? Where is Bigfoot, anyway? Find out the science behind your favorite monsters in these clips.

Nowadays Albert Einstein is one of history's most well-known scientists -- but why? Tune in to learn more about Einstein, from his theories to his early life and more.

Red-light cameras may seem technologically cut-and-dried, but that's far from reality. They've saved lives, but they've also stirred up more controversy that most other traffic control devices on the roads to date.

For people who never leave their native countries, citizenship is simple as pie -- you simply have to be born. But being a citizen entails a lot more than just living in a nation. Test your knowledge about what it means to be a citizen.

Have you been feeling a little off lately? Like maybe something's not quite right? Ordering your steaks extra, extra bloody? If you score above a 15 in this quiz, you might want to avoid holy water and garlicky foods for quite some time, or, you know, an eternity.

Automobile ignition systems rely on perfect timing. A simple spark, when delivered at precisely the right moment, can mean the difference between a smooth running and powerful engine that operates cleanly and an engine that runs rough, lacks power and produces unnecessary emissions. How much do you know about automobile ignition systems?

It can be a sign of love, grief or respect worldwide. Kissing is a natural act that gives millions of people physical and psychological satisfaction, but where did it originate? Why does it make us feel good?

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

Among man's many achievements, the ability to fly is one that never gets old -- especially for people who hang glide. Soaring through the air and reaching daring heights is either thrilling or terrifying, depending on your point of view. Regardless of whether you're ready to take off running, sit back and test your knowledge of the next best thing to grow wings.

Think you might be a zombie? And not just an "office-worker-who-needs-a-coffee-injection-stat" type of zombie, but an actual member of the undead? Take this quiz to find out if you're right. A score of 15 or more may give you cause for concern.

You've got throwing an Oscar party down pat. All of your favorite blogs are written by grips, gaffers and set designers. The people who work the box office at no less than three movie theaters know you by your first name. Think you've got what it takes to pass this movie quiz? Let's see what you've got.

We promise they aren't the manifestation of some depraved high school math teacher. Geodesic domes are certainly geared toward the mathematically minded, but they also have a lot of practical uses. How much do you know about these domes?

In the hypercompetitive world of gadgets, someone is always coming out with the smallest this and the fastest that, so records in this category can be fleeting. The tiniest cell phone of 2000 now looks like it could have belonged to Godzilla. But take your best stab at these gadget records -- just pretend you don't know about the next big thing.

Electric motors are inside all kinds of ordinary devices, using a power source to make motion. So what makes the motor go 'round?

How many jobs have you had? Do you know the difference between networking and career branding? See if you have the skills to ace the Ultimate Employment Quiz. If not, we're telling your boss.

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?

It's time to put on makeup; it's time to dress up right. It's time to raise the curtain on the Muppet quiz tonight!

Everyone knows Bill Gates founded Microsoft and became a billionaire -- he's one of the richest guys in the world right now, according to Forbes magazine. But what else do you really know about him? Take the quiz and found out.

Everyone knows that gas prices are skyrocketing, but how much do you know about where your gasoline is coming from? Do you know where the money that you spend on gasoline is actually going? Where can you find the cheapest gasoline in the world? What about the most expensive? Take our quiz to find out how much you know about gas prices.

Home networks are becoming common in households that use more than one computer. With people using computers for shopping, home businesses and entertainment, it can be essential to link up not only PCs but also fax machines and TVs. What's going on behind this linked-up system?

On Sept. 11, 2001, terrorist attacks on America altered the world's political and military landscape. How much do you really know about the history of these atrocities?

Today we shall see if all that training, gaming and movie watching have paid off. Can you tell the difference between real martial arts maneuvers and fictional ones? In this quiz, you'll face both. Fight!

Forget about hearts and flowers and poetry. Love is all in your head -- the brain, to be precise. So let's strip the romance out of those lovey dovey feelings and get down to the neurochemicals and physiology that release a swarm of butterflies when encountering a new crush. See how much you really know about all that mushy stuff with the Science of Love Quiz.

Are you a player? Have you been there, done that, completed every quest and leveled all the way up? Then get ready to face the myths and rumors of the video game world to see how much you really know. Game on!

Scrabble is the most popular word game in the world, played in 121 countries, and has several famous devotees, including U.S. President Barack Obama and Mel Gibson. Do you have what it takes to master this brainy game?

There's a lot of inventiveness and innovation in the advertising world these days. So much, in fact, that you could find amazing ad campaigns in places you've never been, for products you've never heard of. Here are 10 of the most awesome examples.

Motorcycle gangs have been around for more than 50 years. But only about 1 percent of them are considered criminal and dangerous in the eyes of the law. These are 10 of the most notorious.

If your Facebook status update reads, "Leaving for France!" you're not just gloating about your trip. You're letting everyone know that your house will be empty for about 10 days. Bad idea.

Are you a Mac or a PC? Or, are you wondering what the difference is? We've broken down these computers to reveal their strengths and weaknesses.

It's common knowledge that Thomas Edison invented the light bulb and the phonograph, but did you know he also developed concrete furniture and a phone to communicate with the dead?

Buying in bulk doesn't always mean you have to buy three gallons of everything to get a good deal. You have to play your cards right if you want to save a bundle. Here are a few things you actually should buy in bulk.

Stephen Hawking is known around the world as an acclaimed physicist, but there are more sides of him. From his work as an author to his beliefs about alien life, what are some of the most surprising things about Stephen Hawking?

Waterless urinals still haven't quite broken through to the mainstream, but they can save users billions of gallons of water over standard models. Read on to find out how they work, and stay safe and sanitary.

Tax evasion challenges the idea that any publicity is good publicity, especially since there's more than a 90 percent conviction rate when the tax man takes a celeb to trial. Who are some of the most famous celebrity tax evaders?

Unusual things happen at weddings all the time. You can expect to see anything from grandmas getting down to hip-hop to inebriated toasts and speeches. But some wedding traditions are more unusual than most.

A perfect climate means different things to different people. These 10 countries span the globe and offer a wide range of climates to satisfy any taste -- hot, cold or in-between.

A fiery crater. A gaping sinkhole that swallowed a city block. A narrow borehole drilled into the Earth by man. Which are the world's most bizarre cavities?

Early lowriders cruised the streets of California in the 1930s in customized cars to impress the girls. Find out why these 10 bajito y suavecito cars made our list.

With the exception of the occasional lottery winner, making real money takes time and effort. But there are legitimate ways you can make extra money to supplement your day job. Check out 10 ways you can moonlight and end up with some money to show for it.

Now, more and more produce eaters are looking for produce grown even closer to home -- their own backyards. But it may not be as easy as planting the seed and watching it grow.

Most race fans dream of slipping behind the wheel of a purebred race car. As it turns out, you don't have to go much farther than your own garage to have a race car experience. Your car already has several features or technologies that were originally designed for racing. So what are they?

Since its inception in the late '50s, NASA has accomplished some amazing technical feats. But what are some of the agency's greatest moments?

Sure, your hair dryer or toaster sucks up a lot of kilowatt-hours during the short time it's on, but what are the truly big drains on your home energy budget?

If you normally mute commercials but spend Super Bowl Sunday analyzing every joke or camera angle, you know some American traditions can be kind of bizarre. What are 10 of the weirdest?

Lighthouses have become tourist attractions in coastal areas all over the world. However, many of these time-worn landmarks are inactive and could be lost forever. Here are 10 of the world's most endangered lighthouses.

There are many tools that builders find useful, but only a few of them are absolutely critical. What tools are essential to get the job done?

Feeling unproductive? Not to worry; these iPad apps can help you plan your day, track your finances, fine-tune your fitness routine, and save time and money during your shopping trips.

Sure, we may need a car to get from point A to point B, but would we ever need our car to have an air purifier? How about leather interior ceilings? Or a bejeweled fuel cap? See five of the most extravagant amenities.

So you like to complain about your demonic boss, moronic co-workers and fancy company coffee machine that never, ever works? You need to zip it and meet these 10 hard-working bots. They could tell you stories.

For something so entrenched in our everyday lives, we sure don't know much about the Internet. That might explain all of the half-truths, falsehoods and straight-up myths that surround it. We happily deconstruct five of them here.

Whether it's for a dose of realism or to save money, filmmakers shoot their work all over the globe. Which places are the best for movie buffs to visit on vacation?

Speed Match will help you think faster and improve your reaction time. Remember and compare the symbols flashed on your screen in this fast-paced matching game. Put your intelligence to the test and play Speed Match.

Featuring more than 40 challenging levels, original game play and gorgeous full-screen graphics, Treasures of Montezuma is a bold adventure of strategic surprises like you've never seen before.

With four unique and entrancing ways to play, explosive new game pieces and awe-inspiring planetary backdrops, Bejeweled 2 is more wildly addictive than ever before!

Have you got what it takes to skipper a crab boat on the Bering Sea? Take charge of your own vessel and see if you can survive a season of derby style king crab fishing.

In this addictive picture puzzle game, you’ll be presented with pieces of a larger image, which you’ll then have to click and drag to the right spot. The more accurate you are, the higher you’ll score. Are you and your eagle eyes ready to play?

Find out why this speedy variant of a classic card game is called "Addiction Solitaire."

Test your abilities in this thrilling action puzzler. Control the stone frog idol of the ancient Zuma. Fire off balls to make sets of three, but don't let them reach the golden skull, or you're history!

Discover a rich world filled with incredible fun in Ancient Secrets, a bold new adventure for all ages.

Are you the ultimate HowStuffWorks podcast fan? Prove it in this word search game with 10 exciting levels, numerous categories and backgrounds inspired by the podcasts.

Are you ready for a classic crossword challenge? Online Crossword: Regular provides beginners with game play that will surely satisfy your puzzle craving.

You'll flip over our new word game: Flip Words! Click on letters to make words and solve familiar phrases.

Figure out the combination with the most letters and move to the next level. A classic word scramble for a digital world. Take a break and exercise your brain all at once!

Super Collapse! Puzzle Gallery is a puzzle party! Are you a puzzle genius? It isn't as easy as it looks!

An ocean liner gets caught in a fierce storm and goes down, leaving a group of passengers to fend for themselves on a nearby tropical island. To get back home, you'll have to find answers and overcome more than 200 diverse quests. Can you make it through?

Plant powerful perennials and defend your brain from hordes of hungry zombies in the all-new Plants vs. Zombies -- Game of the Year Edition. The zombies are on the march for tasty brains and only you can stop them!

Take charge of your own Non-Line-of-Sight (NLOS) Cannon, the revolutionary gun that represents the future of U.S. Field Artillery.

Guide the tribe to construct useful buildings, collect needed resources and decorate the landscape. They will then reward you with tributes and helpful items to make it through. Introduce new technologies, play fun Hidden Object mini-games and earn fantastic rewards in Jack of all Tribes!

Alu's Revenge serves up solid gameplay, where stacked stones continue to fall as you use your quick wits and speedy strategy to open the tomb and reveal the jewels inside.

Play this classic game in 3-D! Just when you think you're stuck, you can rotate the cube to reveal more matches to clear. Mahjongg Dimensions is all about creativity, speed and 3-D memory.

Chuzzles are googly-eyed little balls of fur that giggle, squeak and sneeze as you poke and push them across the board. Free them by forming groups of three, but watch out for dangerous puzzle locks! Explore four different game modes as you earn trophies, unlock secret games and more! Once you start popping Chuzzles you might not be able to stop!

The Guardians of the Elements have turned away from the kingdom and allowed a banished wizard to spread corruption and fear. With eight different modes, an amazing storyline and gorgeous graphics, this magical quest will leave you breathless as you prove that this wonderful realm deserves a second chance.

This is the ultimate game for Solitaire lovers –- and it’s free! Does it get any better than that? We tend to think not. Play Klondike Solitaire today and see what you’re missing!

The Scruffs have enlisted your help to save their beloved family home from being sold. Help the Scruffs stave off this looming family crisis and uncover the secret that will change their lives forever.

Become one of the rich and powerful as you buy and sell land, turn bungalows into five-star hotels and build specialty shops. Get the tourists to visit, provide entertainment and stay on track with employees and supplies.

Join Holly in 70 wonderful levels to make brides and grooms happy. Help wedding guests prepare by dressing them, picking out jewelry, styling their hair and more. Once you find the right approach to each customer, your efforts will be rewarded with generous tips.

Bella and Coyote Cub are two drifters who stumble across an abandoned mining town. Restoring a town while dealing with a rowdy group of desperadoes can be challenging! Join Bella and Coyote Cub on this amazing journey.