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The value of skepticism
These TED Talks push us to question more -- our doctors, our governments and even our own eyes.
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How reliable is your memory?
17 minutes 22 seconds
Psychologist Elizabeth Loftus studies memories. More precisely, she studies false memories, when people either remember things that didn't happen or remember them differently from the way they really were. It's more common than you might think, and Loftus shares some startling stories and statistics -- and raises some important ethical questions.
Why people believe weird things
13 minutes 11 seconds
Why do people see the Virgin Mary on a cheese sandwich or hear demonic lyrics in "Stairway to Heaven"? Using video and music, skeptic Michael Shermer shows how we convince ourselves to believe -- and overlook the facts.
3 ways to spot a bad statistic
11 minutes 35 seconds
Sometimes it's hard to know what statistics are worthy of trust. But we shouldn't count out stats altogether ... instead, we should learn to look behind them. In this delightful, hilarious talk, data journalist Mona Chalabi shares handy tips to help question, interpret and truly understand what the numbers are saying.
Visual illusions that show how we (mis)think
14 minutes 19 seconds
Al Seckel, an expert on illusions, explores the perceptual illusions that fool our brains. He shares loads of cool tricks to prove that not only are we easily fooled, we kind of like it.
Own your body's data
16 minutes 53 seconds
The new breed of high-tech self-monitors (measuring heartrate, sleep, steps per day) might seem targeted at competitive athletes. But Talithia Williams, a statistician, makes a compelling case that all of us should be measuring and recording simple data about our bodies every day — because our own data can reveal much more than even our doctors may know.
How juries are fooled by statistics
21 minutes 6 seconds
Oxford mathematician Peter Donnelly reveals the common mistakes humans make in interpreting statistics -- and the devastating impact these errors can have on the outcome of criminal trials.
Inside the fight against Russia's fake news empire
5 minutes 6 seconds
When facts are false, decisions are wrong, says editor and TED Fellow Olga Yurkova. To stop the spread of fake news, she and a group of journalists launched StopFake.org, which exposes biased or inaccurate reporting in order to rebuild the trust we've lost in our journalists, leaders and institutions. Learn more about the fight against misinformation as well as two critical ways we can ensure we're not reading (or sharing) fake news.
Homeopathy, quackery and fraud
17 minutes 2 seconds
Legendary skeptic James Randi takes a fatal dose of homeopathic sleeping pills onstage, kicking off a searing 18-minute indictment of irrational beliefs. He throws out a challenge to the world's psychics: Prove what you do is real, and I'll give you a million dollars. (No takers yet.)
Nina Dølvik Brochmann and Ellen Støkken Dahl
The virginity fraud
11 minutes 31 seconds
The hymen is still the most misunderstood part of the female body. Nina Dølvik Brochmann and Ellen Støkken Dahl share their mission to empower young people through better sex education, debunking the popular (and harmful) myths we're told about female virginity and the hymen.
How to seek truth in the era of fake news
17 minutes 48 seconds
Known worldwide for her courage and clarity, Christiane Amanpour has spent the past three decades interviewing business, cultural and political leaders who have shaped history. In conversation with TED Curator Chris Anderson, Amanpour discusses fake news, objectivity in journalism, the leadership vacuum in global politics and more, sharing her wisdom along the way. "Be careful where you get information from," she says. "Unless we are all engaged as global citizens who appreciate the truth, who understand science, empirical evidence and facts, then we are going to be wandering around -- to a potential catastrophe."