3min 28sec @hayfestival clip CHEMISTRY - Air #Pollution - Ally Lewis

Text from youtube "Professor Ally Lewis describes the main air pollutants and how they affect the world."

3min 46sec @hayfestival clip - HISTORY - The Soviet Union - David Christian

Text from youtube "David Christian explains how and why the Soviet economy broke down.

2min @hayfestival clip - ECONOMICS - #Macroeconomics - Dambisa Moyo

Text from youtube "Global economist and author Dambisa Moyo explains macroeconomics."

3min 23sec @hayfestival clip - GEOLOGY - Mass Extinction - Steve Brusatte

Text from youtube "Steve Brusatte explains the different causes of mass extinction, including the asteroid that killed the dinosaurs."

3min 23sec #haylevels clip - COMPUTER SCIENCE - AI Medicine - James Scott

Text from youtube "James Scott imagines the future of speech and image recognition technologies in medicine."

3min 24sec #Haylevels clip - BIOLOGY - #Epigenetics - Rita Carter

text from youtube "Rita Carter explains the way in which our experiences can affect future generations DNA."

4min 4sec #haylevels clip - Origins of English - Rob Penhallurick

Text from youtube "Rob Penhallurick goes back to the beginnings of the English language from the invasion of Germanic tribes."

2min 25sec #haylevels clip - Climate Change - Ed Hawkins

Text from youtube "Professor of Climate Science lists the evidence from nature that tells us our planet is facing global warming."

4min #HayLevels clip - #AI & #Neural Networks - Nigel Shadbolt

text from youtube "Nigel Shadbolt explains how AI systems are being trained using Neural Networks to gain intelligence."

3min 25sec @hayfestival clip - HISTORY - The Third Crusade - John D Hosler

Text from youtube "The Professor of Military History explains the many multinational forces who fought in the Third Crusade."