It's another sweltering morning in Memphis, Egypt. As the sunlight brightens the Nile, Peseshet checks her supplies. Honey, garlic, cumin, acacia leaves, cedar oil -- she's well stocked with the essentials she needs to treat her...

The founding mother of the blog revolution, Movable Type's Mena Trott, talks about the early days of blogging, when she realized that giving regular people the power to share our lives online is the key to building a friendlier, more...

Richard Branson talks to TED's Chris Anderson about the ups and the downs of his career, from his multibillionaire success to his multiple near-death experiences -- and reveals some of his (very surprising) motivations.

Danish architect Bjarke Ingels rockets through photo/video-mingled stories of his eco-flashy designs. His buildings not only look like nature -- they act like nature: blocking the wind, collecting solar energy -- and creating stunning...

What aspects of religion should atheists (respectfully) adopt? Alain de Botton suggests a "religion for atheists" -- call it Atheism 2.0 -- that incorporates religious forms and traditions to satisfy our human need for connection, ritual...

How can we measure what makes a school system work? Andreas Schleicher walks us through the PISA test, a global measurement that ranks countries against one another -- then uses that same data to help schools improve. Watch to find out...

Literature has long been fascinated with fostered, adopted and orphaned children, from Moses to Cinderella to Oliver Twist to Harry Potter. So why do many parentless children feel compelled to hide their pasts? Poet and playwright Lemn...

Stella Young is a comedian and journalist who happens to go about her day in a wheelchair — a fact that doesn't, she'd like to make clear, automatically turn her into a noble inspiration to all humanity. In this very funny talk, Young...

Sunitha Krishnan has dedicated her life to rescuing women and children from sex slavery, a multimilion-dollar global market. In this courageous talk, she tells three powerful stories, as well as her own, and calls for a more humane...

Could we exit our solar system, and enter another? Astrophysicist Philip Lubin discusses the awesome potential of using lasers to propel small spacecraft, enabling humanity's first interstellar missions. Learn how this transformative...

Some lizards will lose a tail to avoid becoming a meal, but there's more than one reason for animals to self-amputate.

What swims in rivers and the ocean and is an awesome parent? Jessi and Squeaks talk about the amazing life cycle of salmon.

About 10% of people who go through a traumatic experience end up developing PTSD. But one of the most common medications might actually be able to prevent it before PTSD develops.

Explore the lytic and lysogenic viral replication cycles with the Amoeba Sisters! This video also discusses virus structures and why a host is critical for viral reproduction. Expand details for table of contents and further reading...

We chose not to give a numerical value for how many characteristics of life there are, because we do not want to imply that what we are listing must be a specific order, or that it cannot be expanded upon or include exceptions....

Neil deGrasse Tyson was asked by the Templeton Foundation to answer the question "Does the Universe Have a Purpose". Then he read his answer aloud and I drew some pictures for it.

One of the most fundamental ideas in physics is that the disorder of the universe, also known as entropy, is constantly increasing. But, life’s inherent chemical makeup has been hacking the disorder of the universe for billions of years!

The talented herbalist Xu Xian had just started his own medicine shop where he created remedies with the help of his wife, Bai Su Zhen. One day a monk named Fa Hai approached him, warning him that there was a demon in his house. The...

Ngozi Okonjo-Iweala, the former finance minister of Nigeria, sums up four days of intense discussion on aid versus trade on the closing day of TEDGlobal 2007, and shares a personal story explaining her own commitment to this cause.

Carolyn Porco shares exciting new findings from the Cassini spacecraft's recent sweep of one of Saturn's moons, Enceladus. Samples gathered from the moon's icy geysers hint that an ocean under its surface could harbor life.

Sebastian Thrun helped build Google's amazing driverless car, powered by a very personal quest to save lives and reduce traffic accidents. Jawdropping video shows the DARPA Challenge-winning car motoring through busy city traffic with no...

In the ongoing debate about globalization, what's been missing is the voices of workers -- the millions of people who migrate to factories in China and other emerging countries to make goods sold all over the world. Reporter Leslie T....

In her New Orleans neighborhood, artist and TED Fellow Candy Chang turned an abandoned house into a giant chalkboard asking a fill-in-the-blank question: "Before I die I want to ___." Her neighbors' answers -- surprising, poignant, funny...

At her first museum job, art historian Sarah Lewis noticed something important about an artist she was studying: Not every artwork was a total masterpiece. She asks us to consider the role of the almost-failure, the near win, in our own...