Mumbai, Delhi, Chennai, Kolkata -- all the major cities across India have one great thing in common: they welcome people arriving in search of work. But what lies at the other end of such openness and acceptance? Sadly, a shortage of housing for an estimated 100 million people, many of whom end up living in informal settlements. Gautam Bhan, a h...

Believe it or not, about 20 years' worth of potentially life-saving drugs are sitting in labs right now, untested. Why? Because they can't get the funding to go to trials; the financial risk is too high. Roger Stein is a finance guy, and he thinks deeply about mitigating risk. He and some colleagues at MIT came up with a promising new financial ...

Brave, personal stories of people who make bold moves to claim a better life.

Quench your thirst for adventure with these breathtakingly bold talks that explore the Earth’s most spectacular corners, depths and peaks.

Color bravery. A headset for brainwaves. His/hers healthcare. 10 big, bold talks from female speakers.

About this video: "When you don’t know where your next meal is coming from, it’s all-consuming. You can’t focus on anything else." Moved by the round-the-block lines he witnessed while working at a food shelter for a school community service project, 16 year-old Kiran Sridhar founded the "shared economy" platform Waste No Food which connects lef...

Educator and activist Geoffrey Canada chose a powerful list of favorites — talks that address the cycles of poverty and gender violence, and offer bold suggestions for change.

What do we do with all this online venom and in-person vitriol? An exploration of where this hate comes from -- and bold ways to dismantle it.

These young speakers encourage us to ask bold questions, think creatively and dream big. It’s spot-on life advice that adults may just want to listen to.

These speakers — all under 21 when they gave their talks — have big ideas for our health. Meet young people who are taking on cancer, asthma, injuries, even Alzheimer’s with a bold new approach.

Architecture student Magnus Larsson details his bold plan to transform the harsh Sahara desert using bacteria and a surprising construction material: the sand itself.

Were you the favorite child, the wild child or the middle child? Jeffrey Kluger explores the profound life-long bond between brothers and sisters, and the influence of birth order, favoritism and sibling rivalry.

Google's "Jolly Good Fellow," Chade-Meng Tan, talks about how the company practices compassion in its everyday business -- and its bold side projects.

Corruption manifests in many ways -- from money-laundering shell companies to bribes to broken electoral systems. These speakers look boldly at what's wrong, and offer bold ideas on what we can do about it.

"In the cathedral of the wild, we get to see the best parts of ourselves reflected back to us." Boyd Varty, a wildlife activist, shares stories of animals, humans and their interrelatedness, or "ubuntu" -- defined as, "I am, because of you." And he dedicates the talk to South African leader Nelson Mandela, the human embodiment of that same great...

Around the world right now, one billion people are trapped in poor or failing countries. How can we help them? Economist Paul Collier lays out a bold, compassionate plan for closing the gap between rich and poor.

The next big shift is now, and it's not what you think: Facebook is the new Windows; Google must be sacrificed. Tech investor Roger McNamee presents 6 bold ways to prepare for the next internet.

At TEDMED, Sheila Nirenberg shows a bold way to create sight in people with certain kinds of blindness: by hooking into the optic nerve and sending signals from a camera direct to the brain.

A unique ecosystem of plants, birds and monkeys thrives in the treetops of the rainforest. Nalini Nadkarni explores these canopy worlds -- and shares her findings with the world below, through dance, art and bold partnerships.

Thailand's "Mr. Condom," Mechai Viravaidya, retells the country's bold plan to raise its standard of living, starting in the 1970s. First step: population control. And that means a lot of frank, funny -- and very effective -- talk about condoms.

Child prodigy Adora Svitak says the world needs "childish" thinking: bold ideas, wild creativity and especially optimism. Kids' big dreams deserve high expectations, she says, starting with grownups' willingness to learn from children as much as to teach.

Daniel Libeskind builds on very big ideas. Here, he shares 17 words that underlie his vision for architecture -- raw, risky, emotional, radical -- and that offer inspiration for any bold creative pursuit.

Episode 1 of TED Talks India: Nayi Soch. A brand new TED Talks series in Hindi hosted by Shah Rukh Khan.

With humor and persistence, filmmaker Morgan Spurlock dives into the hidden but influential world of brand marketing, on his quest to make a completely sponsored film about sponsorship. (And yes, onstage naming rights for this talk were sponsored too. By whom and for how much? He'll tell you.)

In a TED Talk, speakers share a bold idea in 18 minutes or less. Want to watch the TED Talks you saw on "60 Minutes" with Charlie Rose? Here are the six talks highlighted in the story, at full length. For more, check out the list of all 50 talks shown for even a split-second.

Designer Emily Pilloton moved to rural Bertie County, in North Carolina, to engage in a bold experiment of design-led community transformation. She's teaching a design-build class called Studio H that engages high schoolers' minds and bodies while bringing smart design and new opportunities to the poorest county in the state.

When first discovered in 2010, the Stuxnet computer worm posed a baffling puzzle. Beyond its sophistication loomed a more troubling mystery: its purpose. Ralph Langner and team helped crack the code that revealed this digital warhead's final target. In a fascinating look inside cyber-forensics, he explains how -- and makes a bold (and, it turns ...

Domestic violence and sexual abuse are often called "women's issues." But in this bold, blunt talk, Jackson Katz points out that these are intrinsically men's issues -- and shows how these violent behaviors are tied to definitions of manhood. A clarion call for us all -- women and men -- to call out unacceptable behavior and be leaders of change.

Ash Beckham recently found herself in a situation that made her ask: who am I? She felt pulled between two roles — as an aunt and as an advocate. Each of us feels this struggle sometimes, she says -- and offers bold suggestions for how to stand up for your moral integrity when it isn't convenient.

Speaking one month after the massive Gulf of Mexico oil spill, Lisa Margonelli shows how drilling moratoriums and executive ousters make for good theater, but distract us from the issue at heart: our unrestrained oil consumption. She shares her bold plan to wean America off oil -- by confronting consumers with its real cost.