Dr. Wangari Maathai is a Kenyan environmental, political activist and elected member of Parliament. She founded the Green Belt Movement, an environmental non-governmental organization focused on the planting of trees, environmental conservation, and women's rights. In 2004 she became the first African woman, and the first environmentalist, to receive the Nobel Peace Prize for her contribution to sustainable development, democracy and peace.

The world-renowned environmentalist shared her vision of change. She inspired students with stories of personal sacrifice and stressed that every single person can make a difference.

Maathais lecture was presented by the Concordia Student Union (CSU) in association with the Sustainability Action Fund, the Arts and Science Federation of Associations, the university and the Yves Rocher Foundation.

Find out more about the Green Belt Movement, Maathais forest conservation effort based in Nairobi, by visiting:

http://greenbeltmovement.org.

For information about the CSU Speaker Series, visit:

http://life.csu.qc.ca.

The video of the lecture was produced by Concordia University Television, Canada's oldest student-run television station:

http://cutv.concordia.ca/
http://www.youtube.com/cutv

Clifford Brown-trp, Gigi Gryce-as, Charlie Rouse-ts,
John Lewis-p, Percy Heath-b, Art Blakey-d
Recorded at Audio Video Studios, NYC on august 28, 1953

We investigate allegations that despite its new democratic institutions, police torture continues in Tunisia.

Subscribe to our channel http://bit.ly/AJSubscribeFollow us on Twitter https://twitter.com/AJEnglishFind us on Facebook https://www.facebook.com/aljazeeraCheck our website http://www.aljazeera.com/

⁣Dr. Yosef Ben-Jochannan: African Origins Western Civilization | 1/22/93

In an attempt to shield itself from the armed group al-Shabab, Kenya has started construction on a 700km-long wall along its porous border with Somalia.

The ambitious project, which consists of brick walls, fences and observation posts, will stretch from the town of Mandera in the north to Kiunga in the south. The goal is to lock out al-Qaeda-aligned fighters who have repeatedly crossed into Kenya to wage attacks.

Kenya, an al-Shabab target due to its military involvement in Somalia, has seen an upsurge in large scale attacks recently.

Earlier this year, 148 people, including 142 students, were killed after gunmen stormed the Garissa University College, some 200km from the Somalia border .

The massacre piled new pressure on Kenyan President Uhuru Kenyatta to deal with the group which has killed more than 400 people in the country over the past two years.

In Kenya's Enemy Within we look at the government's proposed border wall and whether it will help stop attacks on Kenyan soil.

Investigative journalist John Allan Namu speaks to people with direct access to the project, who say the plan is unfeasible and won't enhance the country's security.

We hear how corruption among immigration officials, poor coordination with intelligence agencies and slow responses from the security forces have left Kenya unable to stem the attacks.

With exclusive access to al-Shabab fighters in Kenya, we are told how the wall represents a futile effort to shut out the group and the biggest threat the country is facing is from within.

We also speak to the Muslim community who say that constant harassment and intimidation at the hands of security forces, and scare-mongering by the government, are helping drive al-Shabab's recruitment and creating the perfect breeding ground for the group.

- Subscribe to our channel: http://bit.ly/AJSubscribe
- Follow us on Twitter: https://twitter.com/AJEnglish
- Find us on Facebook: https://www.facebook.com/aljazeera
- Check out our website: http://www.aljazeera.com/

"The Sahara is one of the largest and hottest deserts in the world, covering much of North Africa.
The Saharan nomads are famous for their skillful survival, adaptive nature and efficient utilization of the minimal resources at their disposal."

Through his fiction and non-fiction works, Nigerian author Chinua Achebe has sought to repair the damage done to the continent of Africa and its people as a result of European colonization. This is best exemplified in his most famous novel "Things Fall Apart," one of the first African novels written in English to achieve national acclaim. Set in the 1890s, the novel deals with the impact of British colonialism on the traditional Igbo society in Nigeria. Published in 1958 -- just two years before the end of a century of British rule in Nigeria -- the novel celebrated its 50th anniversary of publication in 2008. "An Evening with Chinua Achebe" featured the author reading from his celebrated work.

"The infinite! No other question has ever moved so profoundly the spirit of man," said David Hilbert, one of the most influential mathematicians of the 19th century. A subject extensively studied by philosophers, mathematicians, and more recently, physicists and cosmologists, infinity still stands as an enigma of the intellectual world. Thinkers clash over questions such as: Does infinity exist? Can it be found in the physical world? What types of infinity are there? Through an interdisciplinary discussion with some of the world's leading thinkers, this program will delve into the many facets of infinity and address some of the deepest questions and controversies that mention of the infinite continues to inspire.

This program is part of the Big Ideas Series, made possible with support from the John Templeton Foundation.

The World Science Festival gathers great minds in science and the arts to produce live and digital content that allows a broad general audience to engage with scientific discoveries. Our mission is to cultivate a general public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future.

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/worldscience...
Follow us on twitter: https://twitter.com/WorldSciFest

Original Program Date: May 31, 2013
MODERATOR: Keith Devlin
PARTICIPANTS: Raphael Bousso, Philip Clayton, Steven Strogatz, W. Hugh Woodin

What is Infinity? 00:04

Philip Clayton and the history of Infinity? 2:34

Philosopher Mahavira's role in infinity. 7:22

Steven Strogatz and the mathematics of infinity. 14:16

Hilbert's infinite hotel 18:04

What is Cantor's diagonal proof? 25:05

Continuum hypothesis and what it means to infinity. 28:16

Hugh Woodin and solving the Continuum hypothesis 29:44

Raphael Bousso on infinity and its role in physics. 37:20

Using infinity to make accurate predictions. 47:35

Infinity: Mathematics, Physics and Philosophy. 53:04

Mathematical equivalence of full sentences. 57:10

What is infinity only works as a mental concept? 1:06:30

Final thoughts on infinity? 1:14:20

You exist. You shouldn’t. Stars and galaxies and planets exist. They shouldn’t. The nascent universe contained equal parts matter and antimatter that should have instantly obliterated each other, turning the Big Bang into the Big Fizzle. And yet, here we are: flesh, blood, stars, moons, sky. Why? Come join us as we dive deep down the rabbit hole of solving the mystery of the missing antimatter.

MODERATOR: Brian Greene

PARTICIPANTS: Marcela Carena, Janet Conrad, Michael Doser, Hitoshi Murayama, Neil Turok

OPENING FILM: Animation by Eoin Duffy of Studio Belly, written by Justin Weinstein and Brian Greene

MORE ABOUT THE PROGRAM AND PARTICIPANTS: https://www.worldsciencefestiv....al.com/programs/matt

This program is part of the Big Ideas Series which is supported in part by the John Templeton Foundation.

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

TOPICS:

- The Discovery of Antimatter opening film 00:00

- Brian Greene Introduction 04:00

- Participant Introductions 04:54

- What led Paul Dirac to his thinking? 07:25

- Can we create Antimatter? 22:25

- How does the universe create matter and antimatter and yet there is still matter left around us? 29:42

- Using Neutrinos to detect Antimatter 44:55

- The difference in Neutrinos compared to Antimatter 56:30

- Searching for hints of how to prove the Grand Unified theory 01:10:10

- Drowning in theories 01:22:00

- The applications for Antimatter 01:33:01

Filmed live at the 2018 World Science festival.

Intelligence was once thought to be uniquely human. But researchers have discovered astonishing cognitive abilities in many other species—not just our close cousins like chimps, or fellow mammals like dolphins—but also crows, parrots, and even octopuses. If we consider the intelligence of swarms, we must add bees, termites, and ants to the list of super smart creatures. Join the scientists who study smarts as we ask: What is intelligence? Why do some species get an extra dose? And just how special are humans, really?

This program is part of the BIG IDEAS SERIES, made possible with support from the JOHN TEMPLETON FOUNDATION.

PARTICIPANTS: Simon Garnier, Suzana Herculano-Houzel, Frank Grasso, Denise Herzing

MODERATOR: Faith Salie

MORE INFO ABOUT THE PROGRAM AND
PARTICIPANTS: https://www.worldsciencefestiv....al.com/programs/reth

- SUBSCRIBE to our YouTube Channel and "ring the bell" for all the latest videos 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