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David Freeman

Entries by David Freeman

Why Do Dogs Sniff Each Other's Butts? It's More Complicated Than You Might Imagine

(63) Comments | Posted July 28, 2014 | 2:40 PM

Why do dogs sniff each other's butts? The answer to that question is a bit more complicated than you might imagine.

According to a new video from the American Chemical Society (above), it's all about one canine literally sniffing out important information about the other--its gender, emotional...

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These 'X-Rated' Math Terms Sound Dirty But Aren't Really

(32) Comments | Posted July 2, 2014 | 8:37 AM

For some people, math is a four-letter word. But even if you're comfortable talking equations, you might be a bit squeamish when making reference to math terms with names that sound X-rated.

Here are six math terms that sound dirty but aren't (see list below). The explanations...

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Huge Black Hole At Galaxy's Heart Has A Severe Case Of Gas

(143) Comments | Posted June 25, 2014 | 2:59 PM

Call it a severe case of gas--on a cosmic scale.

Data from multiple space observatories show that gas is spewing at very high speed from the supermassive black hole at the heart of a galaxy some 245 million light-years from Earth.

The discovery comes as a bit...

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Try This Simple Meditation Method To Be Happier, Healthier & More Caring (PODCAST)

(6) Comments | Posted June 24, 2014 | 8:36 AM

As someone who has spent decades at the forefront of brain research, Dr. Richard J. Davidson is well acquainted with the organ's amazing power to think and to reason.

But the University of Wisconsin psychologist also knows that this cognitive virtuosity comes with a big downside.


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This Famous Astronomer Was Looking For 'Zero' But Wound Up Proving The Big Bang Theory

(155) Comments | Posted June 16, 2014 | 8:51 AM

Today the Big Bang theory is accepted as scientific fact. That wasn't the case a half-century ago, when a young radio astronomer named Robert W. Wilson set out to do some simple measurements using a huge new horn-shaped antenna that had been erected on a hilltop...

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This Chart Shows Just How Crazy Crowded The Outer Solar System Really Is

(16) Comments | Posted June 10, 2014 | 12:00 PM

If you think Pluto is the only thing orbiting the sun beyond Neptune, this new chart will set you straight. It shows 132 of the 1,400 "trans-Neptunian objects" that are known to exist in a region that lies 4.5 billion to 7.5 billion kilometers from the sun.


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(6) Comments | Posted June 7, 2014 | 9:53 PM


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If You Think Humans Have Chimps Beat, This Study Will Have You Rethinking Your Theory

(163) Comments | Posted June 6, 2014 | 9:26 AM

There's a lot of bad stuff in the world for sure. But let's all take a minute to consider just how lucky we are that chimps don't look particularly good in business attire. If they did, we might be working for them.

Chimps are way stronger than...

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This Amazing Shot Of 10,000 Galaxies May Be The Hubble Telescope's Most Revealing Photo Ever

(472) Comments | Posted June 3, 2014 | 6:09 PM

NASA calls it the most colorful image ever captured by the Hubble Space Telescope--and the most comprehensive. It has to be one of the most spectacular.

But the image--the remarkable payoff of a new survey called the Ultraviolet Coverage of the Hubble Ultra Deep Field--is more...

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Quantum Teleportation Feat Brings Ultrafast Computer Networks Step Closer To Reality

(89) Comments | Posted May 29, 2014 | 6:15 PM

No one's getting beamed up anytime soon, but teleportation may have taken a big step closer to reality.

Researchers at Delft University of Technology in the Netherlands say they have succeeded in accurately transferring information from one quantum bit to another quantum bit located 3 meters away --...

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Faux Neil DeGrasse Tyson Is Hilarious (And Hungry) In 'Cosmos On Weed' Spoof (VIDEO)

(16) Comments | Posted May 23, 2014 | 5:02 PM

You don't need weed to contemplate the cosmos--just a good guide. But what would "Cosmos: A Spacetime Odyssey" be like if the series' beloved host, Neil deGrasse Tyson, got high before leading viewers out to the nearest galaxy?

It would be extremely funny, that's what. Just have a...

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Here's How Our Obsession With Killing Bacteria Could Actually Be Killing Us (PODCAST)

(7) Comments | Posted May 20, 2014 | 2:20 PM

Dr. Martin J. Blaser has one big theory about a lot of little things.

The little things are microorganisms--the estimated 100-plus trillion bacteria and other microbes that live on and in the average human body.

And Blaser's big theory? That our relationship with these microbial companions--known...

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Awesome NASA Animation Shows Neutron Stars Ripping Each Other Apart (VIDEO)

(7) Comments | Posted May 14, 2014 | 8:50 AM

Unless you're very, very unlucky, you're never going to bump up against a black hole. But a new animation from NASA gives a spectacular, close-up look at a black hole forming from the collision of two neutron stars.

These aren't bumper cars. NASA says these

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If You Think Only Kooks See Faces In A Piece Of Toast, This Study May Change Your Mind (PHOTOS)

(47) Comments | Posted May 13, 2014 | 11:16 AM

Ever seen the face of Jesus in a piece of toast? Some people have. And not just Jesus--and not just in toasted bread.

People perceive faces in all sorts of objects, from a shadowy face on Mars to President Kennedy in a rock...

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Physics Legend Freeman Dyson On The One Thing We Just Don't Get About Science (PODCAST)

(988) Comments | Posted May 6, 2014 | 1:01 PM

In a science career that has spanned more than 60 years, Freeman Dyson has worked alongside some of the greatest minds in theoretical physics, including Albert Einstein, Edward Teller, Hans Bethe, and Richard Feynman.

Of course, Dyson, 90, is himself a mathematical physicist of almost legendary status....

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This Exoplanet Video Will Take You On A Whirlwind Tour Of Almost 2,000 Alien Worlds

(3) Comments | Posted May 6, 2014 | 12:57 PM

How would you like to journey through space for a quick tour of all those alien worlds astronomers have discovered?

No spaceship, you say? No worries. An enterprising graduate student at the University of Leicester in England has created an amazing new exoplanet video that lets you...

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This Praying Mantis Wears Tiny Eyeglasses, And Scientists Say That's A Good Thing (VIDEO)

(8) Comments | Posted April 28, 2014 | 9:00 AM

Think eyeglasses are just a human thing? Think again. As part of ongoing research into the origins of three-dimensional vision, praying mantises are being fitted with tiny 3D glasses.

Sounds buggy, but the team of scientists behind the research claim that the tiny spectacles--said to be the world's...

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New Beard Study Suggests Hipsters Should Think Twice About Weird Facial Hair

(442) Comments | Posted April 16, 2014 | 5:14 PM

What kind of facial hair makes men most attractive to women?

It's complicated.

In 2013 a pair of Australian researchers showed that gals prefer guys with heavy stubble. But a new study by the same researchers suggests that context is everything.

When most men are clean-shaven,...

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Bill Nye Explains Why He Agreed To Debate Creationist Ken Ham

(721) Comments | Posted April 14, 2014 | 2:50 PM

Was it wrong for Bill Nye to debate young-earth creationist Ken Ham? Some scientists--including celebrated evolutionary biologist Richard Dawkins--have spoken out against such debates, saying they lend an air of legitimacy to views for which there is no scientific support.

Why then did Nye agree...

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Kareem Abdul-Jabbar's New 'Skyhook' Is All About The Kids (INTERVIEW)

(3) Comments | Posted April 8, 2014 | 11:43 AM

Basketball fans know Kareem Abdul-Jabbar for his signature skyhook shot that he used to bring his teams to victory in the 1960s, '70s, and '80s.

But these days the sports legend is more concerned with his Skyhook Foundation, which he says he founded to...

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