Deep in our solar system, a new era of exploration is unfolding. Beneath the thick ice of Europa; in the vapor plumes on Enceladus; and within the methane lakes of Titan, scientists are hunting for extraterrestrial life. These moons are 'ocean worlds'— they contain liquid oceans, which can support the formation of life. Does life exist on ocean ...

Bill Stone, a maverick cave explorer who has plumbed Earth's deepest abysses, discusses his efforts to mine lunar ice for space fuel and to build an autonomous robot for studying Jupiter's moon Europa.

Elizabeth "Zibi" Turtle has devoted her career to exploring our solar system's nearby worlds. Her latest project is Dragonfly, a robotic rotorcraft-lander designed to explore Titan, Saturn's largest moon.

The James Webb Space Telescope is a miracle of modern science and engineering. With a 21-foot, gold-coated mirror protected by a sunshield that's the size of a tennis court, it's the world's most powerful telescope and humanity's latest attempt to answer questions like: "Where did we come from?" and "Are we alone?" (It also needed to be folded u...

Dustin Schroeder develops and uses geophysical radar to study Antarctica, Greenland and the icy moons of Jupiter.

Monika Bulaj’s stunning, painting-like photographs blur religious and cultural divisions, exploding stereotypes. She is a TED Fellow.

Right here in our solar system, three small ocean-containing moons are intriguing researchers, who think they might just harbor the conditions for existence to begin. Draw a Venn diagram with two overlapping circles, label one “oceans” and the other “planetary moons,” and look at where the two spheres intersect -- that’s where our search for al...

Teen reporters Sadie Cruz and Nia Ashley conducted lots of interviews with speakers at the TEDYouth conference on November 17. Their Q&As will run on the TED Blog over the next few weeks. Below, an interview conducted by Nia. The Flight Director of the Mars Curiosity Mission, Bobak Ferdowsi, is best known for landing a two-ton rover o...

In the year 1066, 7,000 Norman infantry and knights sailed in warships across the English Channel. Their target: England, home to more than a million people. Around the same period of time, other groups of Normans were setting forth all across Europe. Who were these warriors, and how did they leave their mark so far and wide? Mark Robinson share...

Under the label Laokoon, Hans Block develops films, theatre productions, essays, lecture performances and radio plays that deal with the question of how our idea of humans and society change or can be transformed in the digital era.

Under the label Laokoon, Moritz Riesewieck develops films, theatre productions, essays, lecture performances and radio plays that deal with the question of how our idea of humans and society change or can be transformed in the digital era.

About this event: Educação, que futuro? Há várias questões relevantes para o futuro das escolas na Europa, designadamente sobre competências-chave, inclusão social e o papel dos professores. A educação tem imperiosamente que se adaptar às necessidades das sociedades que serve. Analisar, discutir e descobrir novos caminhos para a educação é o objectivo deste TED...

Tour the deep dark world of the East German state security agency known as Stasi. Uniquely powerful at spying on its citizens, until the fall of the Berlin Wall in 1989 the Stasi masterminded a system of surveillance and psychological pressure that kept the country under control for decades. Hubertus Knabe studies the Stasi — and was spied on by...

About this event: Nadie quiere hablar sobre esta temática pero antes o después tenemos que enfrontarnos a ella: la muerte. ¿Estamos preparados? ¿Sabemos cómo queremos morir? ¿Cuándo deberíamos hablar sobre la muerte? La mayoría de personas nunca hablan sobre la muerte y así no tienen nada claro tampoco. Esta es la temática de nuestro próximo evento TEDxBarcelonaS...

Engineer and daredevil cave explorer Bill Stone is obsessed with discovery -- on Earth and beyond.

Written language, the hallmark of human civilization, didn't just suddenly appear one day. Thousands of years before the first fully developed writing systems, our ancestors scrawled geometric signs across the walls of the caves they sheltered in. Paleoanthropologist, rock art researcher and TED Senior Fellow Genevieve von Petzinger has studied ...

Vincent Cochetel is the Director of the Bureau for Europe at the United Nations High Commissioner for Refugees (UNHCR).

Pop culture often portrays the Middle Ages as a time of forceful personalities and warring dynasties. In this talk, historian Maria Golubeva explains how institutions — city councils, guilds and courts — had just as much (if not more) influence within society, and harbor important lessons about identity and politics in modern day.

What kind of data is your cell phone company collecting? Malte Spitz wasn't too worried when he asked his operator in Germany to share information stored about him. Multiple unanswered requests and a lawsuit later, Spitz received 35,830 lines of code -- a detailed, nearly minute-by-minute account of half a year of his life.

On July 20, 1969, Neil Armstrong became the first human to walk on the moon. Moon Day is held every July 20 to commemorate this momentous feat. 43 years later, humanity is still looking to the sky, mesmerized by lunar bodies. However, it is not just Earth’s moon we’re studying anymore. With better satellites and spacecrafts we know more about th...

Dr. Erin Marie Saltman manages Facebook's counterterrorism and counter-extremism policy work for Europe, the Middle East and Africa.

In 1165, copies of a strange letter began to circulate throughout Europe. It spoke of a fantastical realm, containing the Tower of Babel and the Fountain of Youth— all ruled over by the letter's mysterious author: Prester John. Who was this powerful ruler, and was he even real? Matteo Salvadore shares the legend of a mythical king who impacted t...

About this event: Según Bauman Todo lo que tenemos es cambiante y con fecha de caducidad, en comparación con las estructuras fijas del pasado. El reto de explicar el funcionamiento de la sociedad actual y determinar la relación de las personas con conceptos como el amor, el trabajo o la educación. En este TEDxEixampleSalon podrás compartir, cuestionar y debatir...

Karoli Hindriks is the CEO and founder of Jobbatical, a platform on a mission to make immigration smart.

Ursula von der Leyen believes that green and digital transformations hold the key to Europe's future prosperity and resilience.

It seems the more we know about how democracy works -- through government transparency, better media coverage, even new insights about our brains -- the less we trust democracy itself. Yet it's still, arguably, the best system of government available. As Ivan Krastev says, "What went right is also what went wrong." Can democracy survive?

From his home base in Bulgaria, Ivan Krastev thinks about democracy -- and how to reframe it.

Georgette Mulheir is a pioneer for the movement to end child abuse in the form of orphanages.

George Papandreou draws on lessons learned from the Greek debt crisis as he helps guide the EU through difficult waters.

Greece has been the poster child for European economic crisis, but former Prime Minister George Papandreou wonders if it's just a preview of what's to come. “Our democracies," he says, "are trapped by systems that are too big to fail, or more accurately, too big to control” -- while "politicians like me have lost the trust of their peoples." How...