Only if you are truly open to the possibility of being wrong can you ever learn, says researcher Alex Edmans. In an insightful talk, he explores how confirmation bias -- the tendency to only accept information that supports your personal beliefs -- can lead you astray on social media, in politics and beyond, and offers three practical tools for finding evidence you can actually trust. (Hint: appoint someone to be the devil's advocate in your life.)

What to trust in a "post-truth" world | Alex Edmans

TED is a nonprofit devoted to ideas worth spreading. On this video feed, you'll find TED Talks to inspire, intrigue and stir the imagination from some of the world's leading thinkers and doers, speaking from the stage at TED conferences, TEDx events and partner events around the world. This podcast is also available in high-def video and audio-only formats.

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What does it mean to be an active citizen? It's about more than just voting and paying taxes, says social entrepreneur Gabriel Marmentini. He explains why we can't rely on the state alone to solve all our problems — and presents the four key ingredients for anyone to become a change-maker and engage in solving public issues.

How to be an active citizen and spark change | Gabriel Marmentini

How can Israel and Palestine achieve peace? Palestinian peacemaker Aziz Abu Sarah and Israeli peacemaker Maoz Inon discuss the immeasurable tragedies they've experienced growing up in the region — and how they choose reconciliation over revenge, again and again. With a fierce belief in a better future, they talk about conflict, safety, finding shared values and how they're building a coalition of Israeli and Palestinian citizens who are intent on creating a path to hope and peace.

A Palestinian and an Israeli, face to face | Aziz Abu Sarah and Maoz Inon

It might sound like the plot of a movie, but economic crime is all around us — from drug trafficking and fraud to cybercrimes, tax evasion and more. Economic crime fighter Hanjo Seibert breaks down the complexities of money laundering and how we can all wield our collective power to dismantle the underworld economy and turn off the money tap for criminals.

What you can do to stop economic crime | Hanjo Seibert

When filmmaker Desiree Akhavan told her Iranian immigrant parents she was in love with a woman, she knew they would object. She explains why it's worth the risk to let people get to know the real you.

Why you should disappoint your parents | Desiree Akhavan

Can cannabis actually treat insomnia? It's complicated, says sleep physiologist Jen Walsh. While the plant has been used across time and cultures, there's been little scientific research on how it impacts sleep disorders like insomnia. That's precisely where she and her team come in. Learn about the world's first study into the potential of medicinal cannabis as a safe, accessible treatment to help us all rest easy.

Can cannabis help you sleep? Here's the science | Jen Walsh

TED Talks Daily (SD video)

What to trust in a "post-truth" world | Alex Edmans

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