What Was Used As Paint In Cave Paintings?
We think of our distant, cave-dwelling ancestors as focused on basic survival: eat; don't get eaten. Caves around the world have preserved more: their art.
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Stories By Daniel Leonard
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Inside Moore's Law, The Surprisingly Accurate Prediction About Tech From 1965
We've all heard about Murphy's law, about anything that can go wrong, will go wrong. What about Moore's law, regarding the growth of computing power? -
The Truth Behind The Phenomenon Of The Ant Death Spiral
There's almost never just one ant. They're almost always spotted in groups, sometimes measuring in the thousands, often marching -- but where, and why? -
The Scientific Reasons Why Tongue Twisters Are So Hard To Say
Tongue twisters are fun to do at parties or when you're preparing to do some public speaking. But, science reveals why our brains get certain sounds mixed up. -
Why Did Edward Snowden Seek Asylum In Ecuador?
Until relatively recently, it was easy to disappear -- become a new person, somewhere new, for whatever reason. Escaping the past isn't so easy anymore. -
When Was The First St. Patrick's Day Celebrated?
It's said that on every March 17, everyone becomes Irish. The date is dedicated to St. Patrick, with celebrations around the country, including parades. -
These Famous Books Were Inspired By Dreams
You've almost certainly had this happen: you wake up from a fascinating dream, excited to tell someone or write it down, only for it to fade from your mind. -
What Was Really The First Video Game Ever Invented?
Which came first, the chicken or the egg? When it comes to video games, was Tetris first? How about Pong? Mario Brothers? Some version of solitaire? -
This Is Why Dogs Turn In Circles Before Lying Down
For fans of dogs, it's a pretty adorable canine behavior: circling, sometimes repeatedly, before curling up to sleep. The question then arises: Why? -
This Is How An Etch A Sketch Works
It's one of those toys from before video games: the Etch A Sketch, creating images by twiddling two knobs. Anybody who's seen one wonders: How does it work? -
Is This Australian Region The Oldest Place On Earth?
Australia's Pilbara region is unique and breathtaking. It might even be the oldest place on earth. -
This Is Why Snow Is White
Snow White is of course the name of a character from fairy tales (and movies). Ever ask yourself why is it that snow is actually white? Or is that an illusion? -
The Sad Tale Of The Bat Who Went To Space
While human astronauts tend to get all the attention, lots of animals have been sent into space, too. Here's the sad tale of the bat who went to space. -
The Truth About The Supreme Court Case That Declared Tomatoes Vegetables
To-may-to, to-mah-to -- however you say it (or slice it), it's still delicious, full of nutritional benefits. Fruit or vegetable? Does it matter? Legally, yes. -
This Crystal Cave Is One Of The Most Dangerous Places In The World
At first, the "Cueva de los Cristales" — or "Cave of the Crystals" — sounds like a beautiful place to visit. The name alone is enticing. -
This Is How Mexico Got Its Name
The story is told that the city of Portland, Oregon, was so named because of a coin toss. (The other option was Boston." Where does the name Mexico originate? -
The Real Reason We Can't Find The Lost Peking Man Fossils
The tragic costs of warfare include the loss of lives, both military and civilian, young and old. Property of all kinds is also lost -- buildings, artifacts. -
The True Story That Inspired Hidden Figures
Every once in a while, Hollywood knocks out a film, "based on a true story," that actually contains a lot of fact. "Hidden Figures" is one such film. -
How Persians Once Used Cats To Defeat The Egyptian Army
The history of the world is filled with battles fought to save nations, the tide turned by use of a stratagem, rather than overwhelming numbers. Or with cats. -
How The Days Of The Week Got Their Names
Most of us live within the context of the seven-day week. It wasn't always so. Also, those seven days have individual names. That wasn't always so, either. -
Why This Ancient Roman Object Still Remains A Mystery
The Roman dodecahedron dates back over 1,800 years, and remains a mystery even today. People are still speculating about what the object was used for. -
The Strangely Ironic Words John Adams Said Before His Death
Rather than reflecting on his family or his own career, John Adams' final thoughts instead drifted to his friend and longtime rival Thomas Jefferson. -
What Indigenous People Think About The Bering Strait Theory
It's been theorized the first people in the Americas came on foot across the Bering Strait. Here is what indigenous people think about that theory. -
The Mythology Of Callisto The Constellation Explained
The story behind the constellation now known as Ursa Major involves a person named Callisto. How did Callisto end up as a starry arrangement in the night sky? -
The Real Reason The Anasazi Civilization Disappeared
Kingdoms rise and kingdoms fall -- Egypt, Greece, Rome. The Americas were the site of civilizations as well, including the Aztecs and the mysterious Anasazi. -
The Truth Behind Stanley Kubrick's Only Oscar
Stanley Kubrick is often listed among the best directors of all time; many even call him the best. Kubrick directed 13 full-length films but only won one Oscar. -
The Untold Truth Of Felicette, The Only Cat Sent To Space
Throughout the entire history of spaceflight, only one cat has been successfully launched into space: a black-and-white female named Félicette in 1963.
