Top videos
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
Don't forget to subscribe: https://bit.ly/2Hb8hjx
Watch more interesting videos: https://bit.ly/34ogCaw
Follow Channels Television On:
Facebook: https://www.facebook.com/channelsforum/
Twitter: https://twitter.com/channelstv
Instagram: https://www.instagram.com/chan....nelstelevision/?hl=e
Get more news on our website: https://www.channelstv.com/
#ChannelsTv
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