People are living longer thanks to improvements in healthcare, nutrition and technology. This population shift brings with it incredible possibilities — but also a new set of challenges. So … How do we care for our elderly?

Psychologist Paul Bloom studies the nature of pleasure. In this conversation with Ben Lillie, he discusses how knowing the history of an object can profoundly affect our enjoyment of it.

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Over the course of 25 years, folk rock icons the Indigo Girls have not only released more than a dozen albums, they have also displayed a staunch dedication to countless social, political and environmental issues, melding music and activism in their own, unique way. Alison Prato talks with band member Amy Ray about how they fight for what they believe in without seeming preachy, the evolution of their music, and the state of women around the world.

Beyond Measure by Margaret Heffernan | ideas.ted.com

Culture defines any business, yet it’s also one of the hardest things to manage. In this extract from her TED Book, Margaret Heffernan describes the important, often-overlooked element necessary to build an effective, efficient organization: social capital.

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Rich and poor, left and right, we all agree the world should be more equal. Dan Ariely and Michael Norton have spent the past decade analyzing the data. Now, they tackle what to do next.

Illustration by Dawn Kim/TED | ideas.ted.com

Timothy Doner started teaching himself to speak in other languages when he was 13, and was quickly hailed as a prodigy for his linguistic proficiency. But as he soon realized, there’s more to fluency than being able to barter over kebabs in Arabic or order from a menu in Hindi.

Should you call that meeting?

A public service announcement from TED, with help from artist Wendy MacNaughton.