On Our Minds
Today's Mind-blower
10 Incredible Holes
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?
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science
10 Fictional Spacecraft We Wish Were RealIn honor of Douglas Adams and galactic hitchhikers everywhere, we submit this list of 10 spacecraft that we hopelessly pine for. Mindboggingly beautiful!
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electronics
How Thermal Imaging WorksThermographic cameras detect infrared light (or heat) invisible to the human eye. How can the camera's sensors register temperature at a distance, and how can the tech be used?
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entertainment
Master of Parody: Mel Brooks Movie QuizMel Brooks is the master of satire and parody, mocking everything from wild westerns to wacky space flicks. All that comedy gold has won him Tonys, Emmys, Oscars, Grammys and the right to say "It is good to be the King."
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home
Top 10 Wacky Inventions for the HomeA levitating lounger, a toilet seat that rises to greet you, a fold-out balcony. Some of these household gadgets are useful, and some are absolute fluff. Which ones are the wackiest?
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people
Is April the most violent month?Baseball, taxes and unconscionable acts of mass violence. That's what April has been all about in recent decades. Are there really more acts of terrorism in April, and if so, why?
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entertainment
Are you a Scrabble savant?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?
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science
10 Terrorist Plots That FailedSince the 9/11 terrorist attacks, an estimated 54 other attacks on the U.S. have failed. And these are only the ones we know about. Some, like the underwear bomber and the shoe bomber, live on in infamy. Others are more obscure.
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entertainment
Are you a hobbit? The Earth vs. Middle Earth QuizYou 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.
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auto
5 Cheap Ways to Increase HorsepowerIf you're serious about increasing your car's horsepower -- and you have deep pockets -- your options are almost unlimited. But what can you do if you're on a tight budget?
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people
10 Notable Copycat KillersThe media saturates us with stories of violence, but most people leave them on the page or screen. So what made these copycat killers act out?
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science
How would time travel affect life as we know it?Let's assume that it's possible to create a complete loop in time travel -- that time travelers could travel into the past and then return to the future (or vice versa). What could we do with our time machine, and how would time travel affect our lives?
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entertainment
Stack 'em Up: Lego Blocks QuizMany of us played with Legos when we were kids, but for some people, the fascination continues well into adulthood. So, what's up with those newfangled Lego robots? And what does Lego mean, anyway?
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money
10 Worst Things to Donate After a DisasterNews about a hurricane or tornado far away impels us to want to help the survivors. But is there a right way and a wrong way to do this? Can a donation be worse than doing nothing at all?
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money
Seeing Red: Which countries owe the most?Since 2008, the global recession has threatened to topple the world's most developed and robust economies, and many wealthy nations are now saddled with burdensome debt loads. Test your knowledge of how the economic crisis has affected people from Reno to Reykjavik.
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entertainment
10 Games that Take Minutes to Learn and a Lifetime to MasterGames like chess and checkers have been around for centuries for a reason: They're very easy to learn, but difficult to master. What other games make the cut for this list?
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science
What if I threw a penny off the Empire State Building?You may have heard the tale of a person who throws a penny from the Empire State Building and kills a pedestrian below. Does this story have any truth to it?
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science
What is St. Elmo's Fire?Sometimes a lightning storm heralds sightings of St. Elmo's Fire. What causes the mysterious glow sailors interpreted as a sign of salvation?
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history
Quiz: Are you smarter than Barack Obama?The 44th U.S. president graduated from Harvard Law School and won the Nobel Peace Prize, but there's a chance you might know something he doesn't. A slight one. Take this quiz to find out.
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geography
Why don't we live underground?Potatoes. Moles. Time capsules. Some things just belong underground and thrive in that dark, airless environment. Humans have long preferred topsoil to the subterranean, but some designers are looking to change that.
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science
10 ‘Healthy’ Things That Aren'tYou want to eat right, but marketing and societal misconceptions can lead you away from the best choices, and some choices are good but get used in the wrong way or amounts. Get the scoop on 10 faux-healthy culprits.
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history
How did Rasputin really die?He'd been shot in the back, had no pulse, and yet those piercing green eyes opened wide when his murderers shook his limp body. Why wouldn't the bearded mystic die?
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electronics
Top 10 'Star Trek' Technologies that Actually Came TrueThe characters in "Star Trek" get to wield all kinds of high-tech gadgetry. Some of these gizmos are purely science fiction. What technologies have actually come to pass?
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science
Why is water vital to life?Do you ever play that game in which you select the items you'd bring if you got stuck on a desert island? Along with that treasured bootleg recording of your favorite band, we think that an endless supply of water should be at the top of your list. Here's why.
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!["Look into my eyes. You are getting sleepy. Very sleepy."](http://static.ddmcdn.com/gif/hypnosis-100x60.jpg ""Look into my eyes. You are getting sleepy. Very sleepy."")
