Professor Jim Al-Khalili traces the story of arguably the most important, accurate and yet perplexing scientific theory ever — quantum physics.

The story starts at the beginning of the 20th century with scientists trying to better understand how light bulbs work. This simple question led them deep into the hidden workings of matter, into the sub-atomic building blocks of the world around us. Here they discovered phenomena unlike any encountered before — a realm where things can be in many places at once, where chance and probability call the shots and where reality appears to only truly exist when we observe it.

Albert Einstein hated the idea that nature, at its most fundamental level, is governed by chance. Jim reveals how, in the 1930s, Einstein thought he had found a fatal flaw in quantum physics, because it implies that sub-atomic particles can communicate faster than light in defiance of the theory of relativity.

For 30 years, his ideas were ignored. Then, in the 1960s, a brilliant scientist from Northern Ireland called John Bell showed there was a way to test if Einstein was right and quantum mechanics was actually mistaken. In a laboratory in Oxford, Jim repeats this critical experiment. Does reality really exist or do we conjure it into existence by the act of observation?

The results are shocking!

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Check out all the places seen in this video: www.touropia.com/ancient-ruins-of-the-world/

The world is home to a plethora of fascinating ancient ruins, from crumbling cities to temples that have withstood the test of time. Many of these ancient societies were incredibly innovative and forward thinking. Just take a look at their meticulous city planning and incredible feats of engineering; some of which we are yet to fully understand. Some of the most captivating ancient ruins are full of thousand-year-old mysteries that will boggle even the most curious of minds.

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Today, the Songhai Empire is all but forgotten by history. But this medieval kingdom was once the most powerful force in Africa.

Find out how this civilization grew up on the fringes of the Sahara Desert, among some of the most extreme conditions that nature can throw at us. Discover how it grew and flourished, passing through a process known as the imperial cycle, and learn about what ultimately caused its sudden and dramatic collapse.

SOURCES: www.patreon.com/posts/29534736

Credits:

Sound engineering by Thomas Ntinas

Voice Actors:

Jake Barrett-Mills
Rhy Brignell
Bryan Tshiobi
Pip Willett

Music by Kevin MacLeod is licensed under a Creative Commons Attribution license (creativecommons.org/licenses/by/4.0/) Artist: incompetech.com/

Title theme: Home At Last by John Bartmann. johnbartmann.com/

Special thanks to the Trust for African Rock Art (TARA) and Emma Silvester at Royal African Safaris for footage of the Dabous Giraffe: www.africanrockart.org

A PBS special that previewed the touring exhibition that chronicled more than 3,000 years of ancient Egyptian History. Learn about the boy king and the mystery surrounding his death.

Today modern archaeology often works with digital technology. Geophysics has allowed thousands of ancient sites to be located — a huge gain for science.

The dig is no longer the be-all and end-all of archeology. We accompany some archeologists on their journey into the virtual past. Geophysics comprises a range of techniques with various geological and military functions. Geomagnetism is used to locate enemy submarines or potential reserves of oil or other minerals. Now, German and Irish archeologists have teamed up to use it to trace prehistoric grave systems. Researchers in western Germany are applying it to locate ancient procession and pilgrimage routes. Shipping archeologists in Bremerhaven are availing of digital technology to create virtual models of shipwrecks and, in Berlin, archeologists and game designers have also embarked on a joint project. As luck would have it, they scanned every millimeter of a temple in the Syrian city of Aleppo, not suspecting that, soon afterwards, the complex would be largely destroyed in the country’s civil war. Their virtual model is evidence that the study of the past can have uses for the present, just as technologies of the present can help us to study the past.
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With more board configurations than there are atoms in the universe, the ancient Chinese game of Go has long been considered a grand challenge for artificial intelligence. On March 9, 2016, the worlds of Go and artificial intelligence collided in South Korea for an extraordinary best-of-five-game competition, coined The DeepMind Challenge Match. Hundreds of millions of people around the world watched as a legendary Go master took on an unproven AI challenger for the first time in history.

Directed by Greg Kohs and with an original score by Academy Award nominee Hauschka, AlphaGo chronicles a journey from the halls of Oxford, through the backstreets of Bordeaux, past the coding terminals of DeepMind in London, and ultimately, to the seven-day tournament in Seoul. As the drama unfolds, more questions emerge: What can artificial intelligence reveal about a 3000-year-old game? What can it teach us about humanity?