A happy song about global warming, from Jill Sobule.

Two TED favorites, Jill Sobule and Julia Sweeney, team up for a delightful set that mixes witty songwriting with a little bit of social commentary.

Which of the following is awesome: your lunch or the Great Pyramid of Giza? Comedian Jill Shargaa sounds a hilarious call for us to save the word "awesome" for things that truly inspire awe.

What moves Jill Bolte Taylor? "I love talks that contribute to the overall well-being of who we are as humanity -- about how we can explore ourselves as people in relationship with one another and with this beautiful planet."

As the world's population grows and the effects of climate change come into sharper relief, we'll have to feed more people using less arable land. Molecular biologist Jill Farrant studies a rare phenomenon that may help: "resurrection plants" -- super-resilient plants that seemingly come back from the dead. Could they hold promise for growing fo...

Cave diver Jill Heinerth explores the hidden underground waterways coursing through our planet. Working with biologists, climatologists and archaeologists, Heinerth unravels the mysteries of the life-forms that inhabit some of the earth's most remote places and helps researchers unlock the history of climate change. In this short talk, take a di...

The SETI Institute's Jill Tarter makes her TED Prize wish: to accelerate our search for cosmic company. Using a growing array of radio telescopes, she and her team listen for patterns that may be a sign of intelligence elsewhere in the universe.

Jill Bolte Taylor got a research opportunity few brain scientists would wish for: She had a massive stroke, and watched as her brain functions -- motion, speech, self-awareness -- shut down one by one. An astonishing story.

I wish that you would empower Earthlings everywhere to become active participants in the ultimate search for cosmic company.

Jill Farrant is leading the development of drought-tolerant crops to nourish populations in arid climates.

Jill Sobule isn't just another singer-songwriter with catchy tunes and smart lyrics, she's one of the more insightful satirists of our age. Each of her fanciful songs captures an issue or irony, an emotion or epiphany that helps us understand what it's like to live now.

Jill Heinerth explores underwater caves deep inside the earth.

SETI's Jill Tarter has devoted her career to hunting for signs of sentient beings elsewhere. Winner of the 2009 TED Prize, almost all aspects of her field have been affected by her work.

Jill Shargaa is a woman of multiple talents. A seasoned comedian, she founded the all-female comedy revue, Evening of Estrogen. She is also an illustrator and designer who brings a pulp sensibility to her work.

Brain researcher Jill Bolte Taylor studied her own stroke as it happened -- and has become a powerful voice for brain recovery.

Brandon Boyd, lead singer of Incubus, says, "I hope to one day perform live music on the moon. Perhaps if all goes according to plan, we can make a TED Talk out of it!" We eagerly await this event. Until then, here are his favorite talks.

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.

Take a walk on the stranger side of science with these uncanny, yet fascinating talks.

Reddit co-founder Alexis Ohanian picks 9 talks on the global idea flow. He says, "On an open Internet, where all links are created equal, good ideas win. Anyone, anywhere can share an idea that can be seen by millions."

It's not the end of the world, but as we know, it never hurts to be prepared.

Once you watch these talks, you may not be able to get them out of your head. These talks have staying power and, as you go about everyday life, we bet you'll find yourself thinking of them often.

Trees talk, flowers build elaborate traps and some plants can even come back from the dead. Skeptical? These fascinating talks may just grow on you.

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

Is Earth really the only life-sustaining planet? These speakers think there might just be something or someone else out there -- and urge us to keep looking for it.

Learn about the amazing science behind some of the most awe-inspiring things in the world (and beyond).

Welcome to the global archive of TED Talks! To dive in, start with these popular talks.

Travel across the universe (or is it universes?) to see stunning images of Saturn's rings, hear haunting sounds from distant black holes and catch an infectious sense of wonder about galaxies far, far away.

The first TED was held in 1984. What kind of predictions did people make 30 years ago? (And did they turn out to be right?) Watch the world change over three decades in this nearly year-by-year playlist.

Enjoy these simply wow talks, which will have you thinking about the possibilities for hours.

These talks will make your heart ache in the best of ways. Each is a wonderful reminder of the beautiful poignancy of life.