Vilayanur Ramachandran tells us what brain damage can reveal about the connection between celebral tissue and the mind, using three startling delusions as examples.

Sharing the results of a massive, worldwide study, geneticist Svante Pääbo shows the DNA proof that early humans mated with Neanderthals after we moved out of Africa. (Yes, many of us have Neanderthal DNA.) He also shows how a tiny bone from a baby finger was enough to identify a whole new humanoid species.

Filmmaker Andrew Stanton ("Toy Story," "WALL-E") shares what he knows about storytelling -- starting at the end and working back to the beginning. Contains graphic language ... (Note: this talk is not available for download.)

TED Fellow Prosanta Chakrabarty explores hidden parts of the world in search of new species of cave-dwelling fish. These subterranean creatures have developed fascinating adaptations, and they provide biological insights into blindness as well as geological clues about how the continents broke apart million of years ago. Contemplate deep time in...

Paleoanthropologist Zeresenay Alemseged looks for the roots of humanity in Ethiopia's badlands. Here he talks about finding the oldest skeleton of a humanoid child -- and how Africa holds the clues to our humanity.

In this short talk, TED Fellow Sarah Parcak introduces the field of "space archaeology" -- using satellite images to search for clues to the lost sites of past civilizations.

Strange landscapes, scorching heat and (sometimes) mad crocodiles await scientists seeking clues to evolution's genius. Paleontologist Paul Sereno talks about his surprising encounters with prehistory -- and a new way to help students join the adventure.

Marine biologist Tierney Thys asks us to step into the water to visit the world of the Mola mola, or giant ocean sunfish. Basking, eating jellyfish and getting massages, this behemoth offers clues to life in the open sea.

Reuse of syringes, all too common in under-funded clinics, kills 1.3 million each year. Marc Koska clues us in to this devastating global problem with facts, photos and hidden-camera footage. He shares his solution: a low-cost syringe that can't be used twice.

Rob Dunbar hunts for data on our climate from 12,000 years ago, finding clues inside ancient seabeds and corals and inside ice sheets. His work is vital in setting baselines for fixing our current climate -- and in tracking the rise of deadly ocean acidification.

Fashion designer Isaac Mizrahi spins through a dizzying array of inspirations -- from '50s pinups to a fleeting glimpse of a woman on the street who makes him shout "Stop the cab!" Inside this rambling talk are real clues to living a happy, creative life.

All over the planet, giant telescopes and detectors are looking (and listening) for clues to the workings of the universe. At the INK Conference, science writer Anil Ananthaswamy tours us around these amazing installations, taking us to some of the most remote and silent places on Earth.

Oceanographer Penny Chisholm introduces us to an amazing little being: Prochlorococcus, the most abundant photosynthetic species on the planet. A marine microbe that has existed for millions of years, Prochlorococcus wasn't discovered until the mid-1980s -- but its ancient genetic code may hold clues to how we can reduce our dependence on fossil...

Water is essential to life. Yet in the eyes of the law, it remains largely unprotected -- leaving many communities without access to safe drinking water, says legal scholar Kelsey Leonard. In this powerful talk, she shows why granting lakes and rivers legal "personhood" -- giving them the same legal rights as humans -- is the first step to prote...

Ancient monuments give us clues to astonishing past civilizations -- but they're under threat from pollution, war, neglect. Ben Kacyra, who invented a groundbreaking 3D scanning system, is using his invention to scan and preserve the world's heritage in archival detail. (Watch to the end for a little demo.)

The pressures of having to make an amazing film sent this deadpan, deep-voiced, award-winning filmmaker into a crippling spiral of self-doubt and comic indecision. (Credits: Music by Stillhead; Executive Producer, TED2018 Film Program: Sinéad McDevitt; Director of Production and Video Operations, TED: Mina Sabet)

How do we respect someone's religious beliefs, while also holding religion accountable for the damage those beliefs may cause? Chelsea Shields has a bold answer to this question. She was raised in the orthodox Mormon tradition, and she spent the early part of her life watching women be excluded from positions of importance within the LDS Church....

Ever gaze up at the starry night sky? This stunning view is at risk of disappearing -- unless we act now, says astrophysicist Kelsey Johnson. In this fascinating, unexpectedly funny talk, she explains how light pollution affects almost every species on earth (including us) and shares five "stupidly simple" things you can do to help solve the pro...

What does it take to be a pro gamer? Esports expert William Collis charts the rise of the multibillion-dollar competitive gaming industry and breaks down three skills needed to master video games like Fortnite, League of Legends and Rocket League. And watch out, Collis says: these skills can set you up for crushing it at work, too.

On any given day we're lied to from 10 to 200 times, and the clues to detect those lies can be subtle and counter-intuitive. Pamela Meyer, author of "Liespotting," shows the manners and "hotspots" used by those trained to recognize deception -- and she argues honesty is a value worth preserving. (Contains mature content)

Mathematics is not about following rules, it's about playing—and exploring, fighting, looking for clues, and sometimes even breaking things, according to Dan Finkel. In this playful, inspiring talk, the founder of Math for Love offers teachers and parents alike a five-step guide to sharing the beauty and playfulness of mathematical thinking with...

There are nearly a million known insect species in the world, but most have one of just five common types of mouthparts. Why is this information useful to scientists? Anika Hazra explains how the features of an insect's mouthparts can help identify which order it belongs to, while also providing clues about how it evolved and what it feeds on.

Hundreds of meters below the surface of the ocean, Laura Robinson probes the steep slopes of massive undersea mountains. She's on the hunt for thousand-year-old corals that she can test in a nuclear reactor to discover how the ocean changes over time. By studying the history of the earth, Robinson hopes to find clues of what might happen in the ...

TED Fellow and astronomer Erika Hamden leads the team building FIREBall, a telescope that hangs from a giant balloon at the very edge of space and looks for clues about how stars are created. She takes us inside the roller-coaster, decade-long journey to get the telescope from an idea into orbit -- and shows how failure is inevitable when you're...

Using a mobile app to check glucose levels, sending selfies to receive diagnoses and receiving text reminders to take pills. Is this what the future of healthcare will look like? Karalee Close believes it should, considering that medical mistakes are the fourth leading cause of death in the US. She argues that a closer marriage of technology, bi...

What could you do with the world's smallest 3D printer? Klaus Stadlmann demos his tiny, affordable printer that could someday make customized hearing aids -- or sculptures smaller than a human hair.

What's next? It's the question we never stop asking, with new answers emerging every day from trends and data that offer tantalizing clues for the discriminating observer. For example: pets now outnumber children in the USA, Europe and Japan. What product lines may emerge from this shift? Doggy Prozac? Megatrend expert Alison Sander explains how...

Astronomer Aomawa Shields searches for clues that life might exist elsewhere in the universe by examining the atmospheres of distant exoplanets. When she isn't exploring the heavens, the classically trained actor (and TED Fellow) looks for ways to engage young women in the sciences using theater, writing and visual art. "Maybe one day they'll jo...

"History has shown us that in moments of crisis, society can truly transform," says environmental educator Severn Cullis-Suzuki. Nearly 30 years ago, at just 12 years old, she spoke at the UN's Earth Summit in hopes of reversing the planet's slide into ecological disaster. Some at the summit listened and took radical action, but for the rest of ...

Singer Rhiannon Giddens joins international music collective Silk Road Ensemble to perform "St. James Infirmary Blues," spiking the American folk song that Louis Armstrong popularized in the 1920s with Romani influence and mischievous energy.