Tech communities are booming all over Africa, says Nairobi-based Juliana Rotich, cofounder of the open-source software Ushahidi. But it remains challenging to get and stay connected in a region with frequent blackouts and spotty Internet...

Refrigerators do much more than store your groceries -- they're also vital to preserving and distributing vaccines. Illustrating the realities of (and threats to) global vaccine supply chains, technologist and TED Fellow Nithya...

Our emotions influence every aspect of our lives -- how we learn, how we communicate, how we make decisions. Yet they're absent from our digital lives; the devices and apps we interact with have no way of knowing how we feel....

MIT Media Lab founder Nicholas Negroponte takes you on a journey through the last 30 years of tech. The consummate predictor highlights interfaces and innovations he foresaw in the 1970s and 1980s that were scoffed at then but are...

Have you ever actually read the terms and conditions for the apps you use? Finn Lutzow-Holm Myrstad and his team at the Norwegian Consumer Council have, and it took them nearly a day and a half to read the terms of all the apps on an...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Seth Godin argues the Internet has ended mass marketing and revived a human social unit from the distant past:...

Today we're going to talk about controllers. Controllers are incredibly important in the gaming experience because they are how we communicate actions within a game and often play a significant role in why we like or dislike certain...

As web companies strive to tailor their services (including news and search results) to our personal tastes, there's a dangerous unintended consequence: We get trapped in a "filter bubble" and don't get exposed to information that could...

Ever wish you had your own secret network of hidden passages? Well some animals do and they might be closer than you think!

Want to connect with a depressed friend but not sure how to relate to them? Comedian and storyteller Bill Bernat has a few suggestions. Learn some dos and don'ts for talking to people living with depression -- and handle your next...

What happens when you get an entire audience to stand up and connect with one another? Chaos, that's what. At least, that's what happened when Jane McGonigal tried to teach TED to play her favorite game. Then again, when the game is...

As we hurtle through the development of the digital world, it's important to keep in mind the security implications of the technology we use.

When a squirrel chewed through a cable and knocked him offline, journalist Andrew Blum started wondering what the Internet was really made of. So he set out to go see it -- the underwater cables, secret switches and other physical bits...

Eat facts, Shark Week! Hank takes you on a tour of the shark's amazing anatomy, including the many adaptations that made it a great predator -- despite not having any bones.

Libraries have the power to create a better world; they connect communities, promote literacy and spark lifelong learners. But there's one thing that keeps people away: the fear of overdue book fines. In this thought-provoking talk,...

Conflict and cultural clashes are a part of our global reality, but so is the universal desire for peace. From Bangladesh to Myanmar to Lesotho, discover this inspiring common sentiment in traditional greetings of peace.

TED Fellow Lucy McRae is a body architect -- she imagines ways to merge biology and technology in our own bodies. In this visually stunning talk, she shows her work, from clothes that recreate the body's insides for a music video with...

It starts with a sketch. Then it evolves into a larger-than-life visual masterpiece, a celebration of human connection. Follow along as legendary artist and designer Es Devlin takes us on a visual tour of her work -- including iconic...

Imagine being unable to say, "I am hungry," "I am in pain," "thank you," or "I love you,” -- losing your ability to communicate, being trapped inside your body, surrounded by people yet utterly alone. For 13 long years, that was Martin...

Scientists have found a way to hack the visual process and generate shapes directly on the brain, so a person can see them without using their eyes.

Kayla Briet creates art that explores identity and self-discovery -- and the fear that her culture may someday be forgotten. She shares how she found her creative voice and reclaimed the stories of her Dutch-Indonesian, Chinese and...

Jessi has a special guest today who is an expert on the night sky! Join Jessi and Sam the Bat to learn all about constellations, and to test your star knowledge by making flash cards!

What happens when technology knows more about us than we do? Poppy Crum studies how we express emotions -- and she suggests the end of the poker face is near, as new tech makes it easy to see the signals that give away how we're feeling....

Meditation asks you to slip into a state of serene presence. But why does something that sounds effortless often feel so difficult? In this lighthearted invitation, spiritual leader Yongey Mingyur Rinpoche shares three steps to help you...