You don't have to be a scientist to help protect the world's oceans, says underwater drone expert and TED Fellow David Lang -- in fact, ordinary citizens have pulled together to save the planet's natural treasures many times in history. Lang asks us to take a lesson from the story of the US National Parks Service, offering a three-point plan for conserving underwater wonders.

Let's protect the oceans like national parks | David Lang

Every weekday, TED Talks Daily brings you the latest talks in audio. Join host and journalist Elise Hu for thought-provoking ideas on every subject imaginable — from Artificial Intelligence to Zoology, and everything in between — given by the world's leading thinkers and creators. With TED Talks Daily, find some space in your day to change your perspectives, ignite your curiosity, and learn something new.

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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.

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

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.

How far away is a ceasefire? An update on Gaza and the Rafah invasion | Ian Bremmer

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.

Welcome to the world of audio computers | Jason Rugolo

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.

Why US politics is broken — and how to fix it | Andrew Yang

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.

Let's protect the oceans like national parks | David Lang

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