Why does time pass? • 2015 The Economist

Category: Physics
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The equations of physics suggest time should be able to go backwards as well as forwards. Experience suggests, though, that it cannot. Why? And is time travel really possible?

The Economist • 2015 - 2017 • 9 episodes •

What caused the Cambrian explosion?

For most of the Earth's history, life consisted of the simplest organisms; but then something happened that would give rise to staggering diversity, and, ultimately, life as complex as that which we see today. Scientists are still struggling to figure out just what that was.

2015 • Nature

Do we live in a multiverse?

It has long been thought that our universe is all there is, but it is possible we may live in just one of many.

2015 • Astronomy

What is consciousness?

Understanding what consciousness is, and why and how it evolved, is perhaps the greatest mystery known to science.

2015 • Brain

Why does time pass?

The equations of physics suggest time should be able to go backwards as well as forwards. Experience suggests, though, that it cannot. Why? And is time travel really possible?

2015 • Physics

Life in the universe

Does life exist anywhere else in the universe? And how did it get started? Scientists are seeking the answers in the cosmos, our solar system and right here on planet Earth.

2015 • Astronomy

What is the universe made of?

The Earth, the sun, the stars, and everything we can see, only comprise five percent of the universe. But what about the other 95 percent? Scientists are puzzling over dark matter and dark energy, the mysterious components that make up the rest.

2015 • Astronomy

Why are women paid less than men?

The gender pay gap is not caused by women earning less than men for the same job. It is largely because women choose different careers and suffer a “motherhood penalty”’.

2017 • Economics

Transforming cities with technology

Cities are growing faster than at any time in history, straining services and infrastructure. Technology-driven advances are at the forefront of solving this age-old problem

2017 • Technology

Which trends will affect our lives in the future

A futurist, a demographer and a museum curator spot trends that will affect the way people live and work.

2015 • Technology

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How Small is the Universe?

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What is Something?

What is something? On the most fundamental level thinkable, what are things? Why are things? And why do things behave the way they do?

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How To Teleport

Teleportation is sci fi's most exciting way to travel. Imagine zapping your molecules through space on a transporter beam right out of Star Trek - Dr Michio Kaku reveals how we might all one day be saying 'beam me up Scotty'.

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Playing with Fire

Dr Helen Czerksi explores the extraordinary science of heat. She reveals how heat is the hidden energy contained within matter, with the power to transform it from one state to another. Our ability to harness this fundamental law of science has led to some of humanity's greatest achievements, from the molten metals that enabled us to make tools, to the great engines of the Industrial Revolution powered by steam, to the searing heat of plasmas that offer almost unlimited power.

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The real story behind Archimedes’ Eureka!

When you think of Archimedes’ Eureka moment, you probably imagine a man in a bathtub, right? As it turns out, there's much more to the story. Armand D'Angour tells the story of Archimedes' biggest assignment -- an enormous floating palace commissioned by a king -- that helped him find Eureka.

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