Brian Greene Explains the Universe

Renowned theoretical physicist, Brian Greene, explains why the life that you know, and think to be real, may be just a computer simulation.

String theory, one of the most complex theories in the scientific community, may also be the "Theory of Everything" - a framework that explains everything in the universe. While still theoretical and highly debated, the mathematics of string theory suggests that there could be multiple dimensions of time. Columbia University's theoretical physicist Brian Greene shares how that's possible.

During the mid 20th century, physicists were grappling with a perplexing puzzle. It seemed that every time they applied equations to explain fundamental properties we see and experience around us - like the mass of a particle or what happens when two particles interact with each other - they always got the same answer: infinity.

How did the image of a man falling to his death help us uncover some of the biggest scientific breakthroughs in physics? Columbia University's theoretical physicist Brian Greene shares how this morbid concept would go on to become what Albert Einstein called the happiest thought of his life.

Brian Greene, professor of physics and mathematics at Columbia University and co-founder of the World Science Festival, explains one of the most prominent theories of how our universe will meet its fate.

We spoke with theoretical physicist Brian Greene about Einstein's theory of space-time. Many scientists believe space-time is a fundamental concept. But Greene thinks there might be something deeper to space-time than meets the eye.

Renowned theoretical physicist, Brian Greene, tells an amusing story about the most iconic genius. Albert Einstein was revered for his intelligence, but it doesn't mean he was great at everything.

Renowned theoretical physicist, Brian Greene, explains string theory as if he's talking to a graduate student of physics and then he boils it down for the rest of us.

Brian Greene, Columbia University physicist and co-founder of the World Science Festival, explains how today's physicists and mathematicians use an Einsteinian formula to explain the universe that Einstein himself originally thought was false.

A rare solar eclipse is happening across the US on August 21. It will be the first time since 1918 that a solar eclipse has crossed the country from coast-to-coast. Here are three ways you can make the most of this once-in-a-lifetime event.

There are many different ways a multiverse might exist. Columbia University physicist and leading string field theorist Brian Greene explains how we might visit another universe.

When Albert Einstein said that nothing travels faster than the speed of light, he didn't talk about objects that could already be traveling faster than light. This is a mind-boggling idea that some physicists have explored over the years, and they call these hypothetical particles tachyons. Here's what Columbia University theoretical physicist, Brian Greene, says about the matter.

Theoretical physicist and one of the world's leading string field theorists, Brian Greene discusses how to get kids fired up over science.