The universe started with a bang — but how will it end? With astonishing visuals, cosmologist and TED Fellow Katie Mack takes us to the theoretical end of everything, some trillions of years in the future, in a profound meditation on existence, wonder and the legacy of humanity within the immensity of time and space.

Where’s the best free comedy show in town? Tom Sullam, cofounder of the annual Comedy Wildlife Photography Awards, shares hilarious animal photos that dissolve the distance between humans and nature. The result? A joyful case for caring about what we’re at risk of losing.

The TED Idea Search arrives in Buenos Aires, a city with a fierce intellectual tradition, as 10 speakers deliver talks in a stunning warehouse that’s home to the city’s iconic opera sets, competing for a chance to speak on the TED main stage. Watch as a Gen Z voice reframes “brain rot” as a secret diplomatic tool and a surgeon explores the future of robotic medicine, reminding us why the human touch still matters — and much more. Choosing just one to represent Buenos Aires to the world turns out to be one of the hardest decisions yet.

Watch the full talks from the TEDxRiodelaPlata Idea Search:

00:00 – Intro
3:46 – Rehearsals
16:53 – The Talks
37:30 – Deliberation
40:04 – The Winner Is…

The most interesting ideas often come from the most unexpected places. We searched the globe for ideas with the power to inspire, motivate and change lives — and we found them at @TEDx events around the world. The TED Idea Search follows extraordinary speakers from 9 countries competing for a spot on the TED main stage in Vancouver this April.

A WING London production for TED

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