For the first time in 60 years, Cuba will not have a Castro at the helm.
89-year-old Raul Castro is relinquishing his position as head of the Communist Party.
He says he wants to pass the baton to a younger generation.
Raul and his late brother Fidel began their leadership of Cuba after the Communist Revolution in 1959.
As he now heads into retirement Raul leaves a country wracked by the economic effects of coronavirus and U.S. sanctions and with growing signs of dissent.
So will this bring political change?
And what about relations with the United States?
- Subscribe to our channel: http://aje.io/AJSubscribe
- Follow us on Twitter: https://twitter.com/AJEnglish
- Find us on Facebook: https://www.facebook.com/aljazeera
- Check our website: https://www.aljazeera.com/
#AlJazeeraEnglish #InsideStory #Cuba

Robbert Dijkgraaf, Perimeter Institute for Theoretical Physics
March 5th, 2014

----
Mathematics has proven to be "unreasonably effective" in understanding nature. The fundamental laws of physics can be captured in beautiful formulae. In this lecture I want to argue for the reverse effect: Nature is an important source of inspiration for mathematics, even of the purest kind. In recent years ideas from quantum field theory, elementary particles physics and string theory have completely transformed mathematics, leading to solutions of deep problems, suggesting new invariants in geometry and topology, and, perhaps most importantly, putting modern mathematical ideas in a `natural’ context.
----

visit Perimeter Institute's website to find this and other speakers

http://www.perimeterinstitute.ca/video-library

http://pirsa.org/

Black holes may hold the key to understanding the most fundamental truths of the universe, but how do you see something that’s, well, black? Astronomers think they have the answer. Thanks to a global array of radio telescopes that turn the Earth into a giant receiver, we may soon have the first picture of the event horizon of Sagittarius A*, the black hole at the center of the Milky Way galaxy. And, with the power of math, scientists are going even further, using equations to “look” inside black holes, peering at the central singularity where general relativity and quantum mechanics collide. Join Brian Greene and other leading physicists and astronomers on a journey to make darkness visible.

Find out more about the program and the participants: https://www.worldsciencefestiv....al.com/programs/dark

MODERATOR: Brian Greene
PARTICIPANTS: Shep Doeleman, Andrea Ghez, Vicky Kalogera, Cumrun Vafa

Subscribe to our YouTube Channel for all the latest from WSF.
Visit our Website: http://www.worldsciencefestival.com/
Like us on Facebook:https://www.facebook.com/worldsciencefestival
Follow us on twitter: https://twitter.com/WorldSciFest

The Big Ideas Series is supported in part by the John Templeton Foundation.

Filmed live at the 2018 World Science Festival

In this video lesson, we are going to talk about transformation and symmetry. This is one of the topics in Math in the Modern World Patterns 🔔 Watch Math in Nature and Arts Playlist: https://bit.ly/3q1C5kZ⏲️ Timestamps ⏲️Introduction: (0:00)What is a transformation (3:21)What is Translation? (3:33)What is Reflection Symmetry (3:55)What is a Rotational Symmetry (4:19)What is Dilation (5:09)What is an isometry (5:34)What is symmetry (9:12)Designs and patterns in mathematics (10:53)Types of symmetries (11:50)Want to watch more videos like this?📺 SUBSCRIBE to my channel here: http://bit.ly/mathhubtv🌐 Website: https://mathhubtutorial.com/mathvideotutorials/👍 Facebook: https://www.facebook.com/mathhubtutorials🐦Twitter: https://twitter.com/mathhub303 🙋‍♂️ Have questions? I'm here to help you learn your math courses in an easy way. Leave a comment below and I will try to answer it as soon as I can. You can also leave topics that you need help with and I will create those videos for you.

Writing is generally agreed to be among the greatest inventions in human history, perhaps the greatest invention, since it made history possible.
Subscribe for regular science videos: http://bit.ly/RiSubscRibe

You can read more about Irving's quest to explore the Noah's Ark myth in "The Ark Before Noah: Decoding the Story of the Flood": https://geni.us/zU95bVO
or learn more about cuneiform writing in "Cuneiform": https://geni.us/eMPb

Writing seems to have been invented in the late fourth millennium BC in Mesopotamia in the form of wedge-shaped marks pressed into soft clay with a reed stylus: the script known as cuneiform. Through his work on this ancient language, Irving Finkel, has uncovered amazing secrets from over five thousand years ago, including the story behind Noah’s ark.

Irving Finkel is the curator in charge of cuneiform inscriptions on tablets of clay from ancient Mesopotamia at the British Museum, of which the Middle East Department has the largest collection of any modern museum. This work involves reading and translating all sorts of inscriptions, sometimes working on ancient archives to identify manuscripts that belong together, or even join to one another. He is the author of The Ark Before Noah: Decoding the Story of the Flood.

This talk was filmed in the Ri on 18 January 2019.

---
A very special thank you to our Patreon supporters who help make these videos happen, especially:
Dave Ostler, David Lindo, David Schick, Erik Shepherd, Greg Nagel, Ivan Korolev, Joe Godenzi, Julia Stone, Kellas Lowery, Lasse T. Stendan, Lester Su, Osian Gwyn Williams, Paul Brown, Radu Tizu, Rebecca Pan, Robert Hillier, Roger Baker, and Will Knott.
---

Subscribe for regular science videos: http://bit.ly/RiSubscRibe
The Ri is on Patreon: https://www.patreon.com/TheRoyalInstitution
and Twitter: http://twitter.com/ri_science
and Facebook: http://www.facebook.com/royalinstitution
and Tumblr: http://ri-science.tumblr.com/
Our editorial policy: http://www.rigb.org/home/editorial-policy
Subscribe for the latest science videos: http://bit.ly/RiNewsletter

Product links on this page may be affiliate links which means it won't cost you any extra but we may earn a small commission if you decide to purchase through the link.