Hans Rosling: Religions and babies
Hans Rosling had a question: Do some religions have a higher birth rate than others -- and how does this affect global population growth? Speaking at the TEDxSummit in Doha, Qatar, he graphs data over time and across religions. With his trademark humor and sharp insight, Hans reaches a surprising conclusion on world fertility rates.
Hans Rosling: The best stats you've ever seen
Hans Rosling: Let my dataset change your mindset
Hans Rosling: The magic washing machine
Hans Rosling: Global population growth, box by box
Hans Rosling: New insights on poverty
Hans Rosling: Insights on HIV, in stunning data visuals
Hans and Ola Rosling: How not to be ignorant about the world
How much do you know about the world? Hans Rosling, with his famous charts of global population, health and income data (and an extra-extra-long pointer), demonstrates that you have a high statistical chance of being quite wrong about what you think you know. Play along with his audience quiz — then, from Hans’ son Ola, learn 4 ways to quickly g...
Hans Rosling: Asia's rise -- how and when
Hans Rosling: The good news of the decade? We're winning the war against child mortality
Hans Block and Moritz Riesewieck: The price of a "clean" internet
Millions of images and videos are uploaded to the internet each day, yet we rarely see shocking and disturbing content in our social media feeds. Who's keeping the internet "clean" for us? In this eye-opening talk, documentarians Hans Block and Moritz Riesewieck take us inside the shadowy world of online content moderators -- the people contract...
LB Hannahs: What it's like to be a transgender dad
Knut Haanaes: Two reasons companies fail -- and how to avoid them
Is it possible to run a company and reinvent it at the same time? For business strategist Knut Haanaes, the ability to innovate after becoming successful is the mark of a great organization. He shares insights on how to strike a balance between perfecting what we already know and exploring totally new ideas -- and lays out how to avoid two major...
Christy L. Haynes: Can nanoparticles help fight hunger?
A game-changing solution to the global food crisis could come from something so tiny you can't see it with the naked eye. Nanomaterials chemist Christy Haynes describes her team's work designing nanoparticles that could protect plants from disease and crop loss, helping farmers reap abundant harvests and grow food that will make its way to marke...
Iseult Gillespie: The secret student resistance to Hitler
In 1943, Allied aircraft rained tens of thousands of leaflets on Nazi Germany below. The leaflets urged readers to renounce Hitler, to fight furiously for the future— and to never give up hope. Their call to action rippled through homes and businesses— and their message even reached concentration camps. They were signed: the White Rose. Iseult G...
Kate Kahle: Why autism is often missed in women and girls
Women and girls with autism spectrum disorder often don't display the behaviors people typically associate with neurodivergence, greatly impacting when, how -- and if -- they are diagnosed. Autism acceptance advocate Kate Kahle makes the case for more research into this gender discrepancy, sharing her personal experience with masking, being diag...
Steve Silberman: The forgotten history of autism
Decades ago, few pediatricians had heard of autism. In 1975, 1 in 5,000 kids was estimated to have it. Today, 1 in 68 is on the autism spectrum. What caused this steep rise? Steve Silberman points to “a perfect storm of autism awareness” — a pair of psychologists with an accepting view, an unexpected pop culture moment and a new clinical test. B...
Alex Rosenthal and Pall Thordarson: Which is better: Soap or hand sanitizer?
Your hands, up close, are anything but smooth. With peaks and valleys, folds and rifts, there are plenty of hiding places for a virus to stick. If you then touch your face, the virus can infect you. But there are two extraordinarily simple ways you can keep that from happening: soap and water, and hand sanitizer. So which is better? Alex Rosenth...
Harald Haas: Forget Wi-Fi. Meet the new Li-Fi Internet
What if we could use existing technologies to provide Internet access to the more than 4 billion people living in places where the infrastructure can't support it? Using off-the-shelf LEDs and solar cells, Harald Haas and his team have pioneered a new technology that transmits data using light, and it may just be the key to bridging the digital ...
Peter Haas: When bad engineering makes a natural disaster even worse
What did the world learn from the devastating earthquake that struck Haiti in 2010? That shoddy buildings and bad planning can make a terrible situation even worse. "Haiti was not a natural disaster," says TED Fellow Peter Haas. "It was a disaster of engineering." The solution: Help builders on the ground get trained in modern engineering practi...
Harald Haas: Wireless data from every light bulb
What if every light bulb in the world could also transmit data? At TEDGlobal, Harald Haas demonstrates, for the first time, a device that could do exactly that. By flickering the light from a single LED, a change too quick for the human eye to detect, he can transmit far more data than a cellular tower -- and do it in a way that's more efficient...
Haas&Hahn: How painting can transform communities
Artists Jeroen Koolhaas and Dre Urhahn create community art by painting entire neighborhoods, and involving those who live there -- from the favelas of Rio to the streets of North Philadelphia. What's made their projects succeed? In this funny and inspiring talk, the artists explain their art-first approach -- and the importance of a neighborhoo...
Hani Goodarzi: What if a simple blood test could detect cancer?
Catching cancer at its earliest stages saves lives. But in a body made up of trillions of cells, how do you spot a small group of rogue cancer cells? Biomedical researcher Hani Goodarzi discusses his lab's discovery of a new class of RNAs that, when paired with emerging AI tools, could help detect cancer earlier, more precisely and even through ...
Hany Farid: The dangers of algorithmic justice
Jeff Han: The radical promise of the multi-touch interface
AnnMarie Thomas: Hands-on science with squishy circuits
Myriam Sidibe: The simple power of hand-washing
Myriam Sidibe is a warrior in the fight against childhood disease. Her weapon of choice? A bar of soap. For cost-effective prevention against sickness, it’s hard to beat soapy hand-washing, which cuts down risk of pneumonia, diarrhea, cholera and worse. Sidibe, a public-health expert, makes a smart case for public-private partnerships to promote...
Ersin Han Ersin: What's it like to be a giant sequoia tree?
Artist Ersin Han Ersin invites us to step inside a giant sequoia tree, peering through the bark into the tapestry of life within. Discover how his multisensory installations explore the concept of "umwelt," or the unique sensory experience of different organisms, and reveal the deep interconnectedness of humanity with the natural world.
Thomas W. Cronin: Which animal has the best eyesight?
The animal kingdom boasts an incredible diversity of eyes. Some rotate independently while others have squiggly-shaped pupils. Some have protective lids, others squirt blood. But which creature has the best sight? Which sees best in the darkness? Which sees the most detail? Which animal sees the most color? And finally, which detects motion the ...
James Patten: The best computer interface? Maybe ... your hands
"The computer is an incredibly powerful means of creative expression," says designer and TED Fellow James Patten. But right now, we interact with computers, mainly, by typing and tapping. In this nifty talk and demo, Patten imagines a more visceral, physical way to bring your thoughts and ideas to life in the digital world, taking the computer i...