Can Santa Claus exist according to the laws of physics?

I love this cool visualization of Santa Claus' Christmas Eve trip as seen from space but, with the current laws of physics, we know he wouldn't be able do it. Or would he? Can Santa be real and deliver on his promises? The question is tricky, as this scientific debate shows. Let the classic scientific fight begin once… » 12/11/14 3:48pm 12/11/14 3:48pm

10 Reasons Our Universe Might Actually Be Virtual Reality

Physical realism is the view that the physical world we see is real and exists by itself, alone. Most people think this is self-evident, but physical realism has been struggling with the facts of physics for some time now. The paradoxes that baffled physics last century still baffle it today, and its great hopes of… » 12/02/14 9:00am 12/02/14 9:00am

A New Super-Thin Coating Could Cool Buildings Without AC

When it's hot out, buildings have a hard time staying cool: bombarded with ambient heat and generating yet more inside, their air conditioning systems have to work hard to keep temperatures down. Now, a new super-thin coating developed at Stanford could be applied to buildings to help them cool themselves more… » 11/28/14 7:00am 11/28/14 7:00am

Why We Should Keep Trying to Time Travel

H.G. Wells coined the term "time machine" all the way back in 1895, just a decade before Einstein published his groundbreaking paper on special relativity that would begin show how time travel is possible. The fascination with using technology to look into the past or the future hasn't faded in the last century. And… » 11/20/14 10:03am 11/20/14 10:03am

A Radically New Particle Accelerator Could Have 500 Times the Power

If you know anything about the Large Hadron Collider, you know that it is huge. Massive. 17 miles of tunnels under Switzerland. Traditional accelerators need all that space to get particles to smash into each other at close to the speed of light. But scientists at Stanford have come one step closer to a new type of… » 11/06/14 4:30pm 11/06/14 4:30pm

Yes, Time Travel Is Possible; Here's How

Time travel's been one of man's wildest fantasies for centuries. It's long been a popular trend in movies and fiction, inspiring everything from Charles Dickens' A Christmas Carol to H.G. Wells' The Time Machine to the Charlton Heston shrine that is The Planet of the Apes. And with the opening of Interstellar » 11/05/14 1:25pm 11/05/14 1:25pm