Could we steal the power of a black hole? - Fabio Pacucci

View full lesson: http://ed.ted.com/lessons/the-2-400-year-search-for-the-atom-theresa-doudUploaded 08-12-14How do we know what matter is made of? The quest for the atom has been a long one, beginning 2,400 years ago with the work of a Greek philosopher and later continued by a Quaker and a few Nobel Prize-winning scientists. Theresa Doud details the history of atomic theory.Lesson by Theresa Doud, animation by TED-Ed. Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

View full lesson: http://ed.ted.com/lessons/why-i-must-speak-out-about-climate-change-james-hansenTop climate scientist James Hansen tells the story of his involvement in the science of and debate over global climate change. In doing so he outlines the overwhelming evidence that change is happening and why that makes him deeply worried about the future. Talk by James Hansen. Learn more about your ad choices. Visit megaphone.fm/adchoices

Dig into the history of the elite mercenaries known as condottieri, who were soldiers for hire for Italy's rich and powerful.--During the 14th and 15th centuries, mercenaries known as condottieri dominated Italian warfare, profiting from— and encouraging— the region’s intense political rivalries. As rulers competed for power and prestige, their disputes often played out in military conflicts, fought almost entirely by the condottieri. So who were these elite and conniving warriors? Stephanie Honchell Smith investigates.Lesson by Stephanie Honchell Smith, directed by Yael Reisfeld.Support Our Non-Profit Mission----------------------------------------------Support us on Patreon: http://bit.ly/TEDEdPatreonCheck out our merch: http://bit.ly/TEDEDShop----------------------------------------------Connect With Us----------------------------------------------Sign up for our newsletter: http://bit.ly/TEDEdNewsletterFollow us on Facebook: http://bit.ly/TEDEdFacebookFind us on Twitter: http://bit.ly/TEDEdTwitterPeep us on Instagram: http://bit.ly/TEDEdInstagram----------------------------------------------Keep Learning----------------------------------------------View full lesson: https://ed.ted.com/lessons/the-merciless-mercenaries-of-the-italian-renaissance-stephanie-honchell-smithDig deeper with additional resources: https://ed.ted.com/lessons/the-merciless-mercenaries-of-the-italian-renaissance-stephanie-honchell-smith#digdeeperAnimator's website: https://www.yaelreisfeld.com----------------------------------------------Thank you so much to our patrons for your support! Without you this video would not be possible! Orlellys Torre, Corheu, Thomas Mee, Maryann H McCrory, Blas Borde, John Hellmann, Poompak Meephian, Chuck Wofford, Adam Pagan, Wes Winn, Conder Shou, ntiger, Noname, Hansan Hu, David D, Mac Hyney, Keith Ellison, robin valero walters, Lynne Truesdale, Gatsby Dkdc, Matthew Neal, Denis Chon, Julian Oberhofer, Monte Carroll, Eddy, Jay M, Constantino Victor Delgado, Andrea Galvagni, Andrew Tweddle, Laurel-Ann Rice, Fernando A. Endo, Helen Lee, pam morgan, sarim haq, Gerardo Castro, Michel-Ange Hortegat, Enes Kirimi, Amaury BISIAUX, ND, Samyogita Hardikar, Vanessa Graulich, Vandana Gunwani, Abdulmohsin Almadi, AJ Lyon, Geoffrey Bultitude, Mi Mi, Thomas Rothert, Brian Elieson, Oge O and Weronika Falkowska. Learn more about your ad choices. Visit megaphone.fm/adchoices

View full lesson: http://ed.ted.com/lessons/nancy-etcoff-on-the-surprising-science-of-happinessUploaded 13-07-13Cognitive researcher Nancy Etcoff looks at happiness -- the ways we try to achieve and increase it, the way it's untethered to our real circumstances, and its surprising effect on our bodies. Talk by Nancy Etcoff. Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

Examine the empty land theory, which was created by European colonizers in South Africa to support their claims to the region.--From the 1650s through the late 1800’s, European colonists descended on South Africa. They sought to claim the region, becoming even more aggressive after discovering the area’s abundant natural resources. To support their claims to the land, the colonizers asserted they were settling in empty land devoid of local people. Was this argument true? Anneliese Mehnert debunks the Empty Land Theory.Lesson by Anneliese Mehnert, directed by Héloïse Dorsan-Rachet.Support Our Non-Profit Mission----------------------------------------------Support us on Patreon: http://bit.ly/TEDEdPatreonCheck out our merch: http://bit.ly/TEDEDShop----------------------------------------------Connect With Us----------------------------------------------Sign up for our newsletter: http://bit.ly/TEDEdNewsletterFollow us on Facebook: http://bit.ly/TEDEdFacebookFind us on Twitter: http://bit.ly/TEDEdTwitterPeep us on Instagram: http://bit.ly/TEDEdInstagram----------------------------------------------Keep Learning----------------------------------------------View full lesson: https://ed.ted.com/lessons/history-s-most-dangerous-myth-anza-mehnertDig deeper with additional resources: https://ed.ted.com/lessons/history-s-most-dangerous-myth-anza-mehnert#digdeeperAnimator's website: https://www.heloisedr.com & https://www.instagram.com/helo.drMusic: https://www.campstudio.co/----------------------------------------------Thank you so much to our patrons for your support! Without you this video would not be possible! Siamak Hajizadeh, Ryohky Araya, Mayank Kaul, Christophe Dessalles, Heather Slater, Sandra Tersluisen, Zhexi Shan, Bárbara Nazaré, Andrea Feliz, Victor E Karhel, Sydney Evans, Latora, Noel Situ, emily lam, Sid, Niccolò Frassetto, Mana, I'm here because of Knowledge Fight Facebook group., Linda Freedman, Edgardo Cuellar, Jaspar Carmichael-Jack, Michael Burton, VIVIANA A GARCIA BESNE, The Vernon's, Olha Bahatiuk, Jesús Bíquez Talayero, Chels Raknrl, Sai Pranavi Jonnalagadda, Stuart Rice, Jing Chen, Vector-Dopamine math, Jasper Song, Giorgio Bugnatelli, Chardon, Eddy Trochez, OnlineBookClub.org, Eric Shear, Leith Salem, Omar Hicham, Adrian Rotaru, Brad Sullivan, Karen Ho, Niklas Frimberger, Hunter Manhart, Nathan Nguyen, Igor Stavchanskiy, James R DeVries, Grace Huo, Diana Huang and Chau Hong Diem. Learn more about your ad choices. Visit megaphone.fm/adchoices