Today's Mind-blower

Can you sneeze in space?

You'd think so, wouldn't you? Journey into the past as the astronauts of the Apollo 7 mission tell us for sure.

    • 10 Things We Thought Were True Before the Scientific Method

      science

      10 Things We Thought Were True Before the Scientific Method

      Before the scientific method came along, science dabbled in some pretty far-out ideas in its youth. Remember miasmas? And spontaneous generation? And the four elements?

    • 10 Ways Sitting Wrecks Your Body

      health

      10 Ways Sitting Wrecks Your Body

      You spend long hours sitting at your desk and on the couch, but what is all that time on your caboose really doing to you? As it turns out, a lot of bad.

    • 10 Amazing, Beautiful, TERRIFYING Spiders

      animals

      10 Amazing, Beautiful, TERRIFYING Spiders

      Spiders have been on Earth a whole lot longer than we have — 380 million years, to be precise — and number more than 38,000 separate species worldwide. Explore 10 of the most beautiful and scary of these arachnids.

    • 10 Hardest Habits to Break

      health

      10 Hardest Habits to Break

      "I'm addicted to you baby. You're a hard habit to break." So wailed the lead singer of the group Chicago. But there are harder habits to break out there – like nail biting and procrastinating. Do you do any of the things on our list?

    • How CAPTCHA Works

      computer

      How CAPTCHA Works

      Are you a computer? If you've ever successfully filled in a CAPTCHA on the Web, you're probably not. So what is this test, and what does it do?

    • How does a magnetic stripe on the back of a credit card work?

      money

      How does a magnetic stripe on the back of a credit card work?

      When you swipe your credit or debit card through a reader, you start a process that involves the store you're at, your bank and ultimately your financial well-being. How does that little stripe send so many messages?

    • How can I tell if a bug is edible?

      adventure

      How can I tell if a bug is edible?

      You might not look at a tarantula and think, "Yum." But if you were in a survival situation with only bugs to eat, how would you know which ones are safe?

    • How the NSA Works

      people

      How the NSA Works

      Shrouded in mystery. Exposed by a fresh-faced cubicle dweller. Here's an introduction to the National Security Agency, its mission and activities, and the domestic spying programs uncovered in the Edward Snowden leak.

    • 10 Strange Phobias

      health

      10 Strange Phobias

      If you've seen Stephen King's "It" and developed a fear of clowns, you're not alone. With 9 percent of Americans suffering from phobias, your clown avoidance is just the tip of the iceberg. So what else has 20 million of us shaking in our boots?

    • 10 Scientific Words You're Probably Using Wrong

      science

      10 Scientific Words You're Probably Using Wrong

      If you have a theory that potato chips are making you fat (with the proof being your expanding waistline), you've just used two scientific terms in a very unscientific way.

    • 10 Ways to Bug-proof Your Home

      home

      10 Ways to Bug-proof Your Home

      Whether you're frightened or fascinated by insects, you can probably agree they don't belong in your home. But how can you keep something so small from worming its way into your walls?

    • Top 10 Things Your Nails Say About Your Health

      health

      Top 10 Things Your Nails Say About Your Health

      Whether trimmed or long, polished or plain, your nails say a lot about the state of your health. What warning signs are literally at your fingertips?

    • Stuff You Should Know: What's the Best Time to Go Grocery Shopping?

      shows

      Stuff You Should Know: What's the Best Time to Go Grocery Shopping?

      Josh and Chuck give you some handy tips about the best and worst times to do your grocery shopping.

    • Is it true that if you do anything for three weeks it will become a habit?

      science

      Is it true that if you do anything for three weeks it will become a habit?

      Three weeks of hard work. Is that all it takes to kick your smoking habit, taste for junk food or serial inability to stop hitting the snooze button? Sounds almost too good to be true, doesn't it?

    • 10 Weirdest Museums You Really Should Visit

      adventure

      10 Weirdest Museums You Really Should Visit

      Sure, you can easily find a museum full of dinosaur bones or ancient art. But what if you're really into gelato or weird medical devices? Or toilet seat art?

    • Can travel change you?

      adventure

      Can travel change you?

      Many a travel writer has offered up colorful, anecdotal evidence that travel is a life-changing affair, and who hasn't been wooed by the potentially transformative powers of a trip to a faraway place? But does travel really change you?

    • How Numbers Stations Work

      people

      How Numbers Stations Work

      We may be living in the age of the Internet, but simple shortwave radio transmitters still play a part in the espionage game. The huge benefit: There's no trail.

    • How Stress Works

      science

      How Stress Works

      Stress is just around every corner for most of us these days. Reducing it requires you to learn the various types of stress, their different causes and how to deal with them.

    • 10 Hispanic Scientists You Should Know

      science

      10 Hispanic Scientists You Should Know

      He built President Eisenhower an indoor golf-training machine, analyzed the Zapruder film and searched for an Egyptian pyramid's treasure chamber using cosmic rays. Aren't you dying to meet this wide-ranging scientist?

    • How Project Morpheus Works

      electronics

      How Project Morpheus Works

      You may have seen the occasional VR headset in an arcade, and home models have popped up now and again, only to fizzle. Sony is hoping to change that with Project Morpheus.

    • How Credit Monitoring Works

      money

      How Credit Monitoring Works

      After many Target customers had their credit card information stolen in fall 2013, the store chain offered them free credit card monitoring for a year. But does this service really help protect against identity theft?

    • How Science Changed the Food Industry

      recipes

      How Science Changed the Food Industry

      Even before Louis Pasteur made his breakthrough with pasteurization way back in 1862, science has had a close relationship with food. And that relationship continues to this day with modern food science.

    • How Chip and PIN Credit Cards Work

      money

      How Chip and PIN Credit Cards Work

      Long popular in Europe, Latin America and other parts of the world, chip and PIN credit cards seem finally headed for mass production in the United States. What took them so long to catch on in America and do they really lessen credit card fraud?

    • 10 Short and Sweet Quotes to Use for a Wedding Toast

      lifestyle

      10 Short and Sweet Quotes to Use for a Wedding Toast

      No one likes a long, drawn-out wedding toast. Guests want to clink glasses and get on with the night! Keep your speech short and sweet with one of these quotes and a few words of your own. Our favorite quotes work for the bride, groom, their parents and their attendants.

    • 10 Types of Computers

      computer

      10 Types of Computers

      It may sound silly, but there really are different types of computers. They're super, wearable and, of course, personal computers. That's three. Can you name the other seven?

    • Top 10 Foods High in Omega-3

      health

      Top 10 Foods High in Omega-3

      From eggs to breakfast cereals, lots of products' packages make boasts about omega-3. But what is it, and what foods really are good sources of it?

    • 10 Grossest Things in Your Body Right Now

      health

      10 Grossest Things in Your Body Right Now

      The human body is full of things that might make you shudder -- sweat, eye gunk, pus, partially digested food. What are some of the ickiest and most nausea-inducing items you're carting around in your person?

    • 10 Tips for Making Perfect Cupcakes

      recipes

      10 Tips for Making Perfect Cupcakes

      The perfectly iced little cakes you buy at your local bakery make cupcake baking seem like a snap. But when you try to bake your own, you end up with lumpy cakes smeared with runny icing. Where did you go wrong?

    • 10 Tips for Choosing Carpet

      home

      10 Tips for Choosing Carpet

      With so many different colors, materials and designs available, it can be difficult to choose the best carpet for your home. These 10 tips can help you protect your investment and figure out which carpet is right for you.

    • 10 Embarrassing Problems You Don’t Want to Discuss with Your Doctor

      health

      10 Embarrassing Problems You Don’t Want to Discuss with Your Doctor

      Whether it's an unsightly rash on your rear end or trouble in the bedroom, an embarrassing health problem may be the last thing you want to talk about, but some can be life-threatening. Which are we least likely to bring up with someone who can help?

    • 10 of the Biggest Lies in History

      history

      10 of the Biggest Lies in History

      You don't look fat in those pants. I didn't copy off his paper. She's a natural blonde. I am not a crook. Lots of us lie, but what are the biggest fibs ever told?

    • Top 10 Tips for Stopping Underarm Sweating

      health

      Top 10 Tips for Stopping Underarm Sweating

      Sweating is an important natural process, but you can have too much of a good thing. So what causes excess sweating -- and how can you stop it?

    • 10 Futurist Predictions in the World of Technology

      electronics

      10 Futurist Predictions in the World of Technology

      Futurists can dish out some exciting -- and downright scary -- visions for the future of machines and science. Here are 10 of them in the realm of technology.

    • 10 Silly Inventions That Became Wildly Famous

      science

      10 Silly Inventions That Became Wildly Famous

      Have you ever seen a TV ad for a product that was just so silly, you had to laugh -- then the item became an overnight sensation? Sometimes, people embrace the funniest things. Which made our list?

    • 10 Causes and Treatments for Cold Sores

      health

      10 Causes and Treatments for Cold Sores

      Cold sores are many things, and, unfortunately, they're caused by a virus that those infected will carry with them for the rest of their lives. Let's look at the causes and some treatments.

    • 10 Dangerous Everyday Things in Your Home

      home

      10 Dangerous Everyday Things in Your Home

      Think your home is a safe haven? Think again. With all the hazardous chemicals people use in their homes, it may be more polluted indoors than outdoors.

    • 10 Sneaky Ways Technology Betrays Cheating Cheaters

      electronics

      10 Sneaky Ways Technology Betrays Cheating Cheaters

      Technology can help cheaters connect with paramours -- but it can also leave a trail that gets them caught. How does our connection to the digital world make it easier to expose infidelity?

    • 10 Cool Things You Didn't Know About Stephen Hawking

      science

      10 Cool Things You Didn't Know About Stephen Hawking

      He was born exactly 300 years after Galileo died. He has yet to be awarded a Nobel Prize, although he was awarded a guest spot on “The Simpsons.” What else do you know (or not know) about this acclaimed physicist?

    • Top 10 Ways to Make Money on the Internet

      electronics

      Top 10 Ways to Make Money on the Internet

      Most adults leave the house every day to go to work and make money. But some people have found a way to run their own Internet businesses from home. You can do it, too.

    • 10 Recipes Starring Your Steak Leftovers

      recipes

      10 Recipes Starring Your Steak Leftovers

      Steak is a classic eyes-bigger-than-your-stomach food. Most people think they can finish the huge juicy goodness of a 24-ounce steak, but more often than not, they can't. What do you do with all of the leftover steak?

    • Top 10 Golf Swing Tips

      entertainment

      Top 10 Golf Swing Tips

      Too often your golf game may be soured by a wicked slice or a ball that winds up in water. But before you throw down your clubs in frustration, read these 10 tips to improve your swing.

    • 10 Tips for Identifying and Treating Skin Rashes

      health

      10 Tips for Identifying and Treating Skin Rashes

      You've been working in the yard, ripping out all those unwanted weeds. Now you're scratching a small red patch and wondering where it came from. Could it be a skin rash?

    • 10 Fabulous Fads from the 1950s

      people

      10 Fabulous Fads from the 1950s

      Even if you weren't around in the 1950s, you're probably familiar with these 10 short-lived but long-loved pieces of golden-decade pop culture.

    • 10 Awesome New Inventions You'll Never Hear About

      science

      10 Awesome New Inventions You'll Never Hear About

      Despite all the Slinkies, Band-Aids and BIC pens out there, many patented inventions that push the boundaries of innovation will likely never see widespread use, like this car that’s grown organically and emits pure oxygen.

    • 10 Worst Ways to Die

      health

      10 Worst Ways to Die

      C'mon. You know you've thought about this. We have, too. Want to see how your list compares with ours?

    • 10 Signs You May Be Sleep Deprived

      health

      10 Signs You May Be Sleep Deprived

      The statistics are alarming: According to the World Association of Sleep Medicine, about 45 percent of the world's population isn't getting enough sleep.

    • 10 Strange Wedding Traditions

      people

      10 Strange Wedding Traditions

      Some of our wedding traditions help bond us to our families and to our culture. But be honest: Some of those traditions are straight-up strange, don't you think? Dressing several adult women in the same dress on purpose?

    • 10 Things to Do When You Arrive at Your New Home

      home

      10 Things to Do When You Arrive at Your New Home

      Your friends are meeting you to help unload the truck and arrange furniture. But what else do you need to do when you arrive at your new home?

    • Rainbow Pictures

      science

      Rainbow Pictures

      Why are there so many pictures of rainbows? And what’s on the other side? Hum along with us as you browse through a few snaps of one of nature’s most beautiful effects.

    • Royalty Pictures

      history

      Royalty Pictures

      Our royalty image gallery will show you pictures of famous kings and queens, both ancient and modern.

    • Greatest Moments in Flight

      science

      Greatest Moments in Flight

      Flight has been a human dream for centuries. It wasn't until the dawn of the 20th century that man was finally able to leave the ground. This gallery highlights some of the milestones in aviation.

    • Window Boxes

      home

      Window Boxes

      Window boxes are quick and easy ways to add beauty to a home's exterior. Check out these pictures of window boxes and get inspired to create your own version at home.

    • Baby Care Pictures

      lifestyle

      Baby Care Pictures

      Have you read every baby book and magazine? Caring for a newborn is an around-the-clock job. Discover ways to bond with your baby and aid in the development of your baby's self-esteem.

    • Diamond Pictures

      science

      Diamond Pictures

      Diamonds are some of the most brilliant and expensive natural features Earth has to offer. This collection of images displays diamonds in all their uncut and polished shapes and sizes. Obligatory pictures of very large diamonds are included of course.

    • Big Cat Pictures

      animals

      Big Cat Pictures

      This big cat image gallery shows you a wide variety of these carnivorous felines. From the well known tiger and lion to the lesser known serval and margay, learn about these big cats and their relatives.

    • Fishing Pictures

      adventure

      Fishing Pictures

      Fishing pictures show pictures of fishermen and their catch. See pictures of fishing and fly fishing, and even pictures of ice fishing.

    • Diamond Engagement Ring Pictures

      lifestyle

      Diamond Engagement Ring Pictures

      When it comes to engagement rings, there are infinite combinations to choose from. Looking at pictures of rings can give you ideas for the rock you'd like to buy. See pictures of diamond engagement rings.

    • Glacier Pictures

      science

      Glacier Pictures

      One of the most impressive features of the natural world are glaciers. These massive sheets of ice can travel hundreds of miles. This gallery shows some of the main features of glaciers.

    • Protesting Pictures

      people

      Protesting Pictures

      Protesting is one way some people fight for change. See pictures of protests and learn more about this form of activism.

    • Tesla Roadster Pictures

      auto

      Tesla Roadster Pictures

      The Tesla Roadster is fast, fancy, and environmentally friendly. Check out these pictures of this incredible line of automobiles.

    • iPhone Pictures

      electronics

      iPhone Pictures

      The release of any new iPhone version has people waiting in lines around the world. Take a look at the iPhone and its features in this image gallery.

    • Halloween Pictures

      people

      Halloween Pictures

      Halloween is one of the most popular holidays in the United States. Everyone gets to dress up and be someone else for the night. Explore our spooky Halloween album and discover some of the major elements of this ghostly holiday.

    • Public Enemy Pictures

      people

      Public Enemy Pictures

      The bad, the worse and the worst. You name 'em, we've caught 'em. Check out some of the most notorious criminals in U.S. history, from gangsters to con men to bandits in love.

    • Recession Pictures

      money

      Recession Pictures

      It may not be pretty, but recessions affect us all. So how do they occur? Trace the economy's path in the 21st century from subprime collapse to the mortgage crisis to the credit market crisis.

    • Spy Pictures

      people

      Spy Pictures

      Spying is an important part of government intelligence gathering. This collection of pictures gives you an insight into this highly secretive task.

    • Rocket Pictures

      science

      Rocket Pictures

      The science of rocketry is extremely complex and, at times, dangerous. This collection of images highlights the tech that gets all that science off the ground.

    • Arctic Animal Pictures

      animals

      Arctic Animal Pictures

      Arctic animals, such as polar bears, puffins and narwhals, have developed amazing adaptations to be able to survive in the arctic tundra. Check out these Arctic animal pictures to catch a glimpse of animals that you'll probably never see up close.

    • Wine Pictures

      recipes

      Wine Pictures

      This wine image gallery will make your palate thirsty for a nice glass of pinotage. Uncork your favorite bottle of vino and enjoy these wine pictures.

    • Awesome Architecture Image Gallery

      home

      Awesome Architecture Image Gallery

      From the Taj Mahal to the Leaning Tower of Pisa to Fallingwater, flip through these beautiful examples of architecture.

    • Steve Jobs: Life in Pictures

      computer

      Steve Jobs: Life in Pictures

      Steve Jobs changed the technology industry and our relationship with computers forever. Take a look at these pictures to learn about the life and success of this eccentric, enigmatic visionary.

    • Amphibian Pictures

      animals

      Amphibian Pictures

      Amphibians are a diverse and unique group of animals. In this collection of amphibian pictures, you'll find Amazon horned frogs is african tree frogs, caecilians, newts and more.

    • Insects and Biodiversity Pictures

      science

      Insects and Biodiversity Pictures

      Insects and biodiversity go hand in hand. Without insects our planet would not survive as they are essential to biodiversity. Check out this gallery on the relationship between insects and biodiversity.

    • Famous Gardens Pictures

      home

      Famous Gardens Pictures

      Have you ever visited a famous garden? Gardens both big and small have the ability to awe nature-lovers with their dedication to beauty and tranquility. Check out our amazing album of famous gardens.

    • Everyday Science: Gear Quiz

      science

      Everyday Science: Gear Quiz

      Whether you know it or not, you probably use gears several times each day. Gears are used in a wide variety of mechanical devices including wrist watches, bathroom scales, washing machines and, of course, automobiles.

    • Towing Weight Distribution Quiz

      auto

      Towing Weight Distribution Quiz

      Towing weight distribution is vital to towing safety. Ensuring that tow weight is properly distributed is among the most important towing safety precautions a driver can take. Test your knowledge on towing weight distributions systems with this quiz.

    • Classic Muscle Cars 101

      musclecars

      Classic Muscle Cars 101

      It makes sense that as adults we want to recreate that excitement by buying and reconditioning the muscle cars of our childhood dreams. Think you know about the basics of collecting, refurbishing and enjoying classic muscle cars? Take this quiz to find out!

    • Fact or Fiction: Medical Old Wives' Tales

      health

      Fact or Fiction: Medical Old Wives' Tales

      In spite of highly developed medical technology and scientific research, old wives' tales continue to live on. We hear everything from the plausible "an apple a day keeps the doctor away" to the ridiculous "a cat can steal the breath from a baby's mouth." Think you can distinguish between the facts and the folklore?

    • It's Tablet Time: Which one's right for you?

      computer

      It's Tablet Time: Which one's right for you?

      The Apple iPad still holds an impressive lead in the tablet computer market, but it's not the only game in town. With dozens of tablet models to choose from, how do you begin to find the one that's right for you? Take our quiz and see what you know!

    • A Fool and His Money Are Soon Parted

      money

      A Fool and His Money Are Soon Parted

      In tough economic times, we all start to look at trimming our expenses. Take the budgeting quiz to find out how savvy you are with your money and get a few money-saving tips along the way.

    • The Ultimate Stock Market Quiz

      money

      The Ultimate Stock Market Quiz

      Don't fear this quiz if you aren't a financial whiz -- we're just testing your basic knowledge and throwing in some history here and there. Check it out and see what you know about the stock market!

    • Car Smarts: Catalytic Converters

      auto

      Car Smarts: Catalytic Converters

      Catalytic converters are amazingly simple devices that have proven to be highly effective at reducing harmful emissions produced by car engines. How much do you know about catalytic converters?

    • The Ultimate Faucet Repair Quiz

      home

      The Ultimate Faucet Repair Quiz

      There are few things as annoying as the monotonous drip of water from a faucet, especially in the quiet of the night when you are trying to fall asleep. Let's see what you can do about it. Take this quiz and check what your options are.

    • Fact or Fiction: Birth Control

      health

      Fact or Fiction: Birth Control

      Not every sexual encounter has to end in a baby, thanks to the phenomenon of birth control. If you're sexually active, but not ready to be a mother or a father, you should protect yourself. How much do you know about your options?

    • Are you a hobbit? The Earth vs. Middle Earth Quiz

      entertainment

      Are you a hobbit? The Earth vs. Middle Earth Quiz

      You may be a fan of second breakfast or know enough Elvish to make your way around Rivendell, but do you really know what it takes to be the Lord of the Rings? Test your Tolkien knowledge and decide whether the following are fictions or realities.

    • Quiz: Is your computer secure?

      computer

      Quiz: Is your computer secure?

      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.

    • Horror Movie Weapon of Choice Quiz

      entertainment

      Horror Movie Weapon of Choice Quiz

      Sure, you've bathed your mind in the blood of a thousand slasher movies, but is your memory sharp enough to recall each monstrous killer's weapon of choice? Can you remember how effective they were? It's time to put your horror knowledge to the test.

    • How much do you know about Chrome?

      computer

      How much do you know about Chrome?

      The Google Chrome Web browser is full of fun and useful features. How much do you know about Chrome? Surf through this quiz to find out!

    • Quiz: Don't Worry! Be Happy!

      health

      Quiz: Don't Worry! Be Happy!

      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.

    • Hate Quiz

      science

      Hate Quiz

      Think you understand the most disturbing -- and, in some cases, the most lethal -- of human emotions? Take our quiz to show your stuff.

    • Cars & Drivers: Match Famous Rides to the People Who Drove Them

      auto

      Cars & Drivers: Match Famous Rides to the People Who Drove Them

      Cars can sometimes take on personalities of their own, both in entertainment and in real life. But how well do you know these iconic cars and the people who appeared behind the wheel?

    • The Ultimate Komodo Dragon's Bite Quiz

      animals

      The Ultimate Komodo Dragon's Bite Quiz

      Learn about Komodo dragons, and your next nightmare may feature one. Don't worry, there are only 4,000 Komodos in the wild, so your chances of encountering one are slim. Take this quiz to see how much you know about the bite of a Komodo dragon.

    • Do I need a mechanic?

      auto

      Do I need a mechanic?

      No matter how much you might believe in the DIY ethic, the hands-on approach doesn’t make sense for all car repairs. This quiz might help you decide when it's time to call a pro.

    • The Sex Drive Quiz

      health

      The Sex Drive Quiz

      Most men and women have an active libido, though the relative strength of that sex drive can vary significantly between people and over time. Grab a few minutes to take your sex drive knowledge for a test drive.

    • You're Saying It Wrong: The Misquote Quiz

      people

      You're Saying It Wrong: The Misquote Quiz

      From famous speeches to song lyrics, there's no shortage of well-known quotes. There is, however, a shortage of people who actually get them right. How well do you know these famous quotations? Maybe not as well as you think.

    • Getting Rid of Bags Under Eyes Quiz

      health

      Getting Rid of Bags Under Eyes Quiz

      As we get older, puffiness and bags under our eyes get to be serious skin care issues. We'll teach you how to get rid of bags under the eyes with our quiz

    • Are you wise about wands and wizards?

      entertainment

      Are you wise about wands and wizards?

      Hey, Muggle: Think you know all there is to know about Harry Potter? You'll need a nip of Felix Felicis for luck if you hope to get full marks on this ultimate Harry Potter quiz.

    • The Ultimate Death Quiz

      health

      The Ultimate Death Quiz

      The Grim Reaper is a personification of death that has been invented and refined over the years to help humans make sense of their own mortality. How much do you know about your own mortality? You can't cheat death, and you can't cheat on this quiz about death, either. So sharpen your scythe and get started.

    • Strange, Spooky, Scary: The Supernatural Quiz

      science

      Strange, Spooky, Scary: The Supernatural Quiz

      How much do you actually know about the unknowable? It's time to put your supernatural knowledge to the test. Pray you spent enough time in your bookstore's candlelit occult section.

    • 5 Ways Men and Women Kiss Differently

      shows

      5 Ways Men and Women Kiss Differently

      A kiss isn't just a kiss when it comes to scientifically proven sex differences in how men and women make out.

    • Why do we get brain freeze?

      shows

      Why do we get brain freeze?

      We all know what an ice cream headache feels like. Lauren's here to explain why they happen. It involves temperature (duh), nerves and lots of blood.

    • Were there real-life hobbits?

      shows

      Were there real-life hobbits?

      In 2003, researchers on the island of Flores in Indonesia made a bizarre discovery: a group of people standing 3 feet tall. But is Homo floresiensis a distinct species? Was there really a race of hobbits? Tune in to learn more.

    • The Acid Flashbacks of True Detective

      shows

      The Acid Flashbacks of True Detective

      In HBO's "True Detective," Detective Rustin Cohle experiences intense acid flashbacks from his past use of LSD. But can hallucinations kick in days, months or even years after a psychedelic substance leaves your body?

    • Saying No to Sex

      shows

      Saying No to Sex

      If you don't want to have sex with someone, that doesn't mean you're a terrible, uptight person. Cristen talks about learning how to say no to sex and how it can actually make your sex life better in the long run.

    • Why Straight Guys Hit On Lesbians

      shows

      Why Straight Guys Hit On Lesbians

      A couple lesbians want to know why straight guys don't believe they're gay and think they can turn them hetero, and Cristen waxes "Chasing Amy."

    • The Future of Time

      shows

      The Future of Time

      What's the date and time on a planet that has a 700-day year and 14-hour days? As far as we can tell, time is only an illusion and timekeeping was invented to keep people from missing trains.

    • This Day in History: Cesar Chavez, Crayolas & Bunsen Burners

      shows

      This Day in History: Cesar Chavez, Crayolas & Bunsen Burners

      Today marks the creation of the Crayola crayon and honors both the inventor of the Bunsen burner and the legendary labor organizer Cesar Chavez. Plus, all is revealed in the series finale, guest-starring Ben Bowlin.

    • Why Do Some Noises Drive You Crazy?

      shows

      Why Do Some Noises Drive You Crazy?

      Do you want to strangle people for chewing gum? Does the crinkle of plastic fill you with inarticulate, homicidal fury? If so, you may suffer from the little-understood condition called 'misophonia'. Join Ben Bowlin to learn more.

    • We are Meme Machines

      shows

      We are Meme Machines

      Memes are simply ideas, and at the heart of our human experience is the sharing of ideas. But why do some memes die on the vine? And what does any of this have to do with technology and the singularity?

    • Can men be feminists?

      shows

      Can men be feminists?

      Cristen explains the origin of the term "feminism," what it means and whether men are invited to the gender-equality party.

    • Louis Braille and Braille

      shows

      Louis Braille and Braille

      Learn how Louis Braille invented the system that sparked Helen Keller to say, "we the blind are as indebted to Louis Braille as mankind is to Gutenberg."

    • 10 Disgusting Food Facts: Part 2

      shows

      10 Disgusting Food Facts: Part 2

      Pink slime in your meat? Check. Maggots in your mushrooms? Yes, please! Find out what else is dwelling in the food supply as Julie takes you through part two of the disgusting food facts tour.

    • Edward Jenner: Smallpox Vaccine

      shows

      Edward Jenner: Smallpox Vaccine

      Although forms of vaccination had been discovered thousands of years ago in Asia and Africa, Western Europeans didn't pick up on it until Edward Jenner turned an old wives' tale into the Stuff of Genius.

    • Could We Live Underwater?

      shows

      Could We Live Underwater?

      In the future, will underwater resorts provide the ultimate form of relaxation? Much like living in space, there are many life support challenges to consider!

    • We're Only Getting Younger: Regenerative Medicine

      shows

      We're Only Getting Younger: Regenerative Medicine

      The average human life span is constantly increasing but we still don't fully understand the science behind age expectancy. Modern medical technologies could reverse our aging process - but is this a good thing?

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      Erno Rubik and the Rubik's Cube

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