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Here's what happens to your knuckles when you crack them

Adults Health Human
One man cracked his knuckles in one hand for 60 years and not the other. Watch the video to see what he found out.
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Scientists' Crazy Plan To Refreeze The Arctic

Adults Global Warming Technology
As the mean global temperature continues to rise, the arctic ice caps continue to melt. What are scientist planning to do about it? Here's a hint: it involves 10 million sea water pumps.
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Proof of evolution that you can find on your body

Adults Animals Human
You have your mom's smile, your dad's eyes, and the ear muscles of a Triassic mammal.
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Shredding Bacteria With Technology From Insect Wings

Adults Animals Nature Technology
Dragonfly wings are covered in bacteria-killing nanopillars, and scientists are taking inspiration from them to make smarter anti-bacterial surfaces!
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This Incredible Pen Will Digitize All Your Notes And Drawings Straight To Your Phone

Adults Gadgets Technology
Moleskine has developed a Smart Writing Set that transmits notes to your phone. The Pen+ has a thin aluminum body with a hidden camera embedded inside it.
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Your Dog Forgets You When You Leave

Adults Animals Pets
When you leave the house, does your dog or cat even remember you?
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Images of Our Changing Earth

Adults Photography Space World
Amazing before and after satellite images taken from the International Space Station show how quickly our dynamic, but fragile planet can change.
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What Happens When A Fly Lands On Your Food?

Adults Animals Health
Have you ever wondered what a fly is doing when it lands on your food? Laci did some research to figure out just what happens.
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Top 10 Countries at Recycling

Adults Global Warming World
The ten countries that recycle the highest proportion of their municipal waste.
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Watch Dory, don't buy her

Adults Animals Film Nature
The release of Pixar's Finding Dory could spell trouble for the blue tang, a species of tropical fish that the character Dory is based on.
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7 Pets You Should Never Release In The Wild

Adults Animals Nature
Sometimes, people release their exotic pets into the wild. Why can this cause such a huge problem?
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Scientists just captured stunning images of deep sea creatures

Adults Animals Nature
Some sea creatures are so new to us, they don't even have names.
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Weird Things Your Body Does When You're Around Your Crush

Adults Biology Human Relationships
Love has some strong effects on our bodies. From blushing to sweating, why do we react the way we do when facing a crush?
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Bill Gates: the robot that takes your job should pay taxes

Adults Economy Technology Work
In an interview with Quartz editor-in-chief Kevin Delaney, Bill Gates explains why robots that take jobs away from people shouldn't get a free pass when it comes to income tax.
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How Should We Define Intelligent Life?

Adults Animals Life
We've been searching for intelligent life in the universe for decades, but have we been doing it all wrong?
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100,000,000 Years From Now

Adults Future World
It's Okay To Be Smart
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Virtual reality gave this couple the ability to relive their past experiences.

Adults Family Life Technology
For Laura and Leo, virtual reality became a doorway to their past lives of experience and travel.
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Science Finally Says We Should Never Work 40 Hours A Week

Adults Mental Health Work
Researchers have found that working long hours could be putting your mental and physical health at serious risk.
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GoPro: Andreu Lacondeguy Conquers King Kong with Karma Grip

Adults Film Sports
Andreu Lacondeguy makes a famous freeride line look smooth as butter with the new GoPro Karma Grip Gimbal.
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Valentine's Day | History

Adults History Relationships Religion
How did St. Valentine become associated with love and romance? Get the full story behind the holiday.
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5 Disgusting Facts about McDonald's

Adults Food Health Marketing
There have been plenty of scandals and questionable practices in the house that Big Mac built, we're gonna keep things simple, by focusing on the food, the marketing behind it, and its impact on the way we eat.