How aerosols brighten clouds — and cool the planet | Sarah J. Doherty

Bill Ackman has made billions of dollars — and a name for himself — as an activist investor, buying up stock to push for change at companies. In this wide-ranging conversation with author and business ethics professor Alison Taylor, Ackman discusses how he's bringing his activism into the social and political spheres — and shares his thoughts on free speech, his notoriously long posts on X, the conversation around Harvard and DEI and more.

Each Sunday, TED shares an episode of another podcast we think you'll love, handpicked for you… by us. Today: in celebration of Mother's Day , we're sharing an episode we think you'll enjoy from How to Be a Better Human.Activist, and MacArthur Genuis, Ai-jen Poo believes that caring for others is one of the fundamental acts that make us human. But from nannies to elder-care workers, house cleaners to living assistants, single parents and beyond, globally, caretakers do not earn fair wages or recognition for their essential, life-giving labor. The President of the National Domestic Workers Alliance, Ai-jen explains how society undervalues domestic work, and provides a framework on how we can start a conversation about the future of care for our loved ones – and ourselves. For the full text transcript, visit go.ted.com/BHTranscripts  

There's a reliable indicator of a woman's future likelihood of cardiovascular disease — but it rarely gets asked about, says obstetrician and researcher Meryam Sugulle. She delves into the role of the placenta in pregnancy, how it can predict health outcomes and the single question that should be worked into routine health screenings.

Here's a conundrum: the same aerosol pollutants that harm human health also help cool the climate, says atmospheric scientist Sarah J. Doherty. Is there a way to clean up the air without warming the planet? Exploring the unintended consequences of reducing air pollution, she makes the case for a better understanding of marine cloud brightening — or intentionally adding sea salt aerosols to clouds over the ocean, which could reflect sunlight back into space and potentially reduce global warming.

In an exploration of conflict and diplomacy, president and founder of Eurasia Group and GZERO Media Ian Bremmer joins TED's Helen Walters to unravel the ideological underpinnings, contrasting objectives and humanitarian crises defining the current situation in Gaza. Listen for the latest on Israel’s invasion of Rafah and what happened to the proposed ceasefire deal as well as a dissection of the elusive quest for peace in a region haunted by the specter of war.

In an exclusive preview of unreleased technology, designer and inventor Jason Rugolo unveils an entirely new kind of computer you can talk to like a friend. This "audio computer" — which can augment the sounds around you, translate conversations in real time, naturally respond to your voice and more — promises to shake up how we use our devices. It's shown publicly for the first time ever on the TED stage.

The political system in the United States needs a redesign, says political reformer Andrew Yang. Exposing the flaws of a system built on poor incentives, he proposes a cost-effective overhaul inspired by primary elections already working in places like Alaska and advocates for ranked-choice voting, where voters can choose candidates in order of preference regardless of party, stemming the influence of extreme ideologies.

How much should we invest in teachers, and what should new investment actually involve? Education innovator Randy Seriguchi Jr. suggests the US should create a "G.I. Bill" for teachers, with a particular emphasis on uplifting Black male professionals. He shares a model of this idea in action through community partnerships in San Francisco, which provide aspiring teachers with graduate school tuition, subsidized housing, personalized fit assessments and more. "If we truly want to elevate this profession to inspire new, diverse talent to join us, we have to improve both the personal and professional experiences associated with teaching," says Seriguchi.

Each Sunday, TED shares an episode of another podcast we think you'll love, handpicked for you … by us. Today: in celebration of Star Wars Day, we're sharing an episode from The Redemption of Jar Jar Binks, TED's first narrative show. It explores how Jar Jar Binks became one of the most polarizing figures in cinematic history when he made his debut in Star Wars Episode 1: The Phantom Menace. It’s 1999, and sixteen years after its original release, a new Star Wars is finally coming. Fans have been camping out in front of theaters across the country just to be the first to see it. The beloved intergalactic saga is set to debut a slew of brand new characters, one of whom is a revolutionary CGI creation named Jar Jar Binks. Whispers begin to spread about big changes coming to the galaxy far, far away — and not everyone’s happy about it. Transcripts for The Redemption of Jar Jar Binks are available at go.ted.com/jarjar

When it comes to climate, what are we doing right and where should we focus our efforts next? Systems innovator Ryan Panchadsaram and strategist Anjali Grover talk with TED science curator David Biello about the latest on the world's progress toward solving the climate crisis — and why there's more reason for optimism than you might think. Using strategic goal-setting tools that have transformed countless organizations, Panchadsaram and Grover explore the urgent actions needed to steer the planet toward a sustainable future and the pivotal roles of innovation, investment and policy. "The climate story isn't yet written," Grover says.