"A visual history of social dance in 25 moves" by Camille A. Brown
In her high-energy demonstration, choreographer and dance teacher Camille A. Brown traces the history of social dances performed by African-American slaves in the 19th century.
The dances are forms of artistic expression, but also outlets for expressing resistance and freedom.
"Hunting for dinosaurs showed me our place in the universe" by Kenneth Lacovara
Paleontologist Kenneth Lacovara explains how a 77 million-year-old dinosaur the size of a house reminded him of the wonders of human evolution.
Amid a planet of roaming beasts, tiny specks of life managed to survive, adapt, and use their conscious brains to outlast the giants.
"Gene editing can now change an entire species — forever" by Jennifer Kahn
Journalist Jennifer Kahn introduces viewers to CRISPR, a tool used for gene editing that gives humans the power to shape DNA.
CRISPR's potential applications make it apt for many ethical debates and thought experiments, but scientists already have plans to use it for good — they intend to wipe out the mosquito-born diseases malaria and Zika.
"Our refugee system is failing. Here's how we can fix it" by Alexander Betts
Oxford professor Alexander Betts dismantles the idea that forced migration should cause alarm.
By changing our attitudes toward refugee families, many of whom are harmless and only interested in fleeing terror, Betts says we can begin accepting them as we do anyone else.
"Inside the mind of a master procrastinator" by Tim Urban
Anyone who's taken a dive down the rabbit hole of YouTube can relate to illustrator Tim Urban's talk about putting things off.
Urban, who says he has lived his entire life as a procrastinator, urges people to confront their bad habit while they still have time to get everything done.
"Can we build AI without losing control over it?" by Sam Harris
Neuroscientist and philosopher Sam Harris says there's no doubt about it: Artificial intelligence is on its way.
Harris warns that humans are right to fear this coming revolution, which experts predict could result in millions of lost jobs and perhaps even a robot takeover.
"What the discovery of gravitational waves means" by Allan Adams
Theoretical physicist Allan Adams explains why the science world went nuts in September 2015 (and again in June 2016), after a fancy laser detector observed tiny gravitational waves in outer space.
By detecting the faraway waves, Adams explains, astronomers can reconstruct the very beginnings of the universe itself.
"What do you think when you look at me?" by Dalia Mogahed
Muslim scholar Dalia Mogahed uses her time on the TED stage to challenge people's Islamophobia and urge them to choose understanding over assumptions.
She compels viewers to face their own biases in order to see her and other Muslims as more than dangerous stereotypes.
"A prosecutor's vision for a better justice system" by Adam Foss
Prosecutor Adam Foss sees the US criminal justice system as too eager to punish — especially when it comes to young offenders.
Foss questions whether "to the fullest extent of the law" is a worthwhile clause in all cases, and whether other forms of justice can give America's at-risk youth a better shot at life beyond prison.
"The secret to effective nonviolent resistance" by Jamila Raqib
Jamila Raqib, executive director of the Albert Einstein Institution, makes the case that nonviolent protest is the most effective way to topple tyranny, but only if done correctly.
Raqib says aimless marches do little to help a cause. Like war, effective nonviolent resistance is about having a clear set of demands and sticking to them until the very end.