What if you could take something as tiny as a grain of sand — and as common as a glass bottle — and use it to tackle the climate crisis? Waste alchemist Franziska Trautmann shares how the spark of an idea turned into a large-scale operation helping restore the eroded shores of Louisiana and beyond. (Created in collaboration with Ignite Talks)

In a universe not unlike ours, a tech-environmentalist group claims to have created an AI that is the direct “voice of the earth,” a computer connected via electrodes to the mycelium network under an ancient forest named S.A.N (Sentient Advocate of Nature). The film imagines what nature thinks of human impact on the planet, as a renowned reporter conducts a world-first interview with S.A.N.

In his 2000 bestseller "The Tipping Point," Malcolm Gladwell told the story of why crime fell in New York City in the 1990s. Now, 25 years later, he's back with a confession and a mea culpa: "I was wrong," he says. He shares how his analysis contributed to the rise of the infamous "stop and frisk" policing policy in New York City — and shows why journalists should avoid the trap of imagining a story is ever really over. (Followed by a Q&A with TED's Monique Ruff-Bell)

In this whimsical talk and performance, musician and comedian Elle Cordova ponders what happened before the Big Bang. She’s then joined by guitarist Toni Lindgren for the original song “Carl Sagan,” exploring social media, human connection and how we’re all just reaching out like stars in the night sky.

Does AI pose a threat to democracy? Law professor Lawrence Lessig dissects how this emerging technology could influence democratic institutions, warning that we’ve already passed a point (before superintelligence or AGI) that deserves a lot more attention.

What will the world look like in 2030? International business consultant Nikolaus S. Lang predicts the evolution of a multipolar world, with multiple emerging coalitions of countries acting in new ways to achieve their economic, technological and military goals. He dives into what this will mean for the global economy, offering five tips for business leaders to prepare for the coming geopolitical landscape.

Seventy-two percent of the world's population lives under some sort of autocratic rule, says freedom fighter Leopoldo Lopez. In a rousing call to defend democracy worldwide, he shares the story of his imprisonment and exile for leading the movement against Venezuela's authoritarian regime — and shares his vision for uniting across borders to champion freedom and stamp out autocracy.

Fashion is a huge part of the world's waste problem, but it doesn't have to be. Coachtopia founder Joon Silverstein shows how her company creates new designs from the waste products of another, a circular process that cuts the need for new raw materials — and rethinks what qualifies as "luxury." (Made in partnership with Coachtopia)

How can everyday people help foster and protect democracy? Detailing her work fighting for people power as an activist in Madagascar, Ketakandriana Rafitoson discusses how citizen assemblies — meetings where ordinary citizens get educated about democracy — empower communities to protect their rights, debate important civic questions and take action to create a brighter future.

Do you hate having your photo taken? Portrait photographer Teri Hofford is here to change your mind. She unpacks why you may think you look bad in photos — and how to boost your confidence for those moments captured on camera.

"Intuition helps us see the big picture," says filmmaker and sustainability leader Hrund Gunnsteinsdóttir. Reflecting on her work at the UN, she outlines three ways innsæi (the Icelandic word for "intuition") can help humanity face our greatest existential threats — urging us to use our inner wisdom as a guide for essential change.

A six-time world yo-yo champion, Shu Takada is spinning his dreams into reality. Watch how he turns a humble pastime into a mesmerizing art form, blending yo-yo wizardry with dance and acrobatics.

In this in-depth discussion on the implications of Donald Trump’s re-election as US president, geopolitical expert Ian Bremmer explores the key issues that shaped the result — as well as the coming shifts in US foreign policy, from the Russia-Ukraine conflict to the US-China relationship and the Middle East. Learn more about the economic pressures, complex global dynamics and central personalities (including Elon Musk) that will define a second Trump presidency. (This live conversation, recorded on November 7, 2024, was hosted by TED’s Helen Walters.)

Billions of dollars are poured into global development every year, but results are lacking, says economist Karthik Muralidharan. Diving into an example with public education, he outlines how smarter resource allocation and evidence-based interventions, like learning software that dynamically responds to students and teaches at the level that's right for them, can accelerate global development worldwide — not by spending more, but by spending smarter.

We tend to consider romantic partners and family ties to be our most important relationships, but deep friendships can be just as meaningful. In a perspective-shifting talk, author Rhaina Cohen introduces us to the people unsettling norms by choosing a friend as a life partner — and shows why we're all better off recognizing there's more than one kind of significant other.

Sometimes, in fact, nature is stranger than fiction

Yet another reason to fight light pollution

Sometimes, in fact, nature is stranger than fiction

Sometimes, in fact, nature is stranger than fiction

Sometimes, in fact, nature is stranger than fiction

Human beings and chimps share as much as 98 percent of their DNA. If our species are so similar, can chimps be genetically engineered to be more like us?

Sometimes, in fact, nature is stranger than fiction

The answer may lie between being ticklish and having a sense of humor

Sometimes, in fact, nature is stranger than fiction

The Smithsonian Castle is recreated in gingerbread by Charles Froke, executive pastry chef of Washington's Four Seasons (Produced by: Abby Callard)

Sometimes, in fact, nature is stranger than fiction

Sometimes, in fact, nature is stranger than fiction

Why are we equipped with this curious modification? Find out in this one-minute video, where Ask Smithsonian host Eric Schulze gives us the info on our wrinkled digits.

The appendix may not be as useless as commonly thought.

Our host, Eric Schulze, has the answer

Christopher Gray | Smithsonian Magazine’s 2016 American Ingenuity Award Winner for Youth Achievement Christopher Gray is the founder and CEO of Scholly, the groundbreaking web and mobile app that matches current or future college students who need financial support with scholarships that can help them. Scholly has been downloaded 850,000 times and has connected college students with some $50 million in scholarships. Philadelphia-based Gray, an ABC “Shark Tank” winner and recipient of a $100,000 grant from philanthropist Steve Case’s Rise of the Rest competition, sees his digital platform as a 21st-century tool for helping countless young Americans achieve their college dreams without piling on crushing debt.

How will populations change in the United States over the next 40 years? Interview by Terence Monmaney Special Thanks to Joel Kotkin

From soil to soup (Smithsonian.com). Read more at http://www.smithsonianmag.com/science-nature/passion-for-tomatoes.html

Vice president of engineering and chief evangelist at Google on the connected world in 2050

Through painstaking work, photographer Drew Gardner transformed Elizabeth Jenkins-Sahlin into her ancestor, a famous women’s rights activist. (Credit: Drew Gardner)

Nearly 300,000 people gather every Memorial Day to witness the legendary Indianapolis 500, one of the greatest spectacles in U.S. racing

In 1925, an Alaskan adventurer and his trusted Siberian husky completed a grueling 600-mile journey across the frozen plains. Their exploits would end up saving the lives of 2,000 people.

Who’s afraid of the dark? Our Ask Smithsonian host Eric Schulze is here to explain the illuminating science behind night vision.

From This Object in History, aired on @SmithsonianChannel

Chris Mah, researcher at the Smithsonian Institution's National Museum of Natural History in the invertebrate zoology department, describes the characteristics of different sea star species observed on the final dive of the Laulima O Ka Moana expedition. (Credit: Video courtesy of the NOAA Office of Ocean Exploration and Research, 2017 Laulima O Ka Moana)

Snowball the cockatoo bobs his head and lifts his leg to the beats of the Backstreet Boys' "Everbody"

The American Ingenuity Award winner is giving new hope to thousands of young people in America's prisons

High-speed video captures the unique ability of a leaping praying mantis to control its spin in mid-air and precisely land on a target.

The Siberian jay screeches at predators when they are near, but uses a different call for each deadly intruder

Sometimes, in fact, nature is stranger than fiction

Photographer David Burnett focused his camera on the many tourists who flocked to Florida in 1969 to watch the launch of Apollo 11 (Produced by Molly Roberts; Photographs by David Burnett/Contact Press Images)

In the remote Pacific, the Phoenix Islands provide an unspoiled center for marine science

To soar over Stratford-upon-Avon in Warwickshire is to be transported back in time to the age of William Shakespeare, a man born in humble circumstances who would go on to become the most celebrated writer of all time.

Archaeologists in Saqqara make a dazzling discovery: a late period Egyptian coffin with a gilded mask. Now, to bring it to the surface, they use a pulley known as a "tambora," a technology that dates back to Ancient Egypt