The World as You’ll Know It: The Great Rebuild

Aug 12 2024 35 ep. 926

The World as You’ll Know It: The Great Rebuild Podcast artwork

Whether you’re aware of it or not, you are part of one of the most ambitious projects we as humans have ever attempted: Rebuilding the world, pretty much from the ground up, in order to switch from fossil fuels to clean energy sources. It’s a major undertaking, one that will require staggering financial investment and the success of technologies many people have never heard of. In this season of The World as You'll Know It, science journalist Arielle Duhaime-Ross goes deep inside the world of cutting-edge climate technologies and asks: How is this all going to work? The answers — from some of the world’s most innovative and audacious thinkers, builders and investors — reveal the promise, obstacles and tradeoffs of a new clean-energy landscape that will shape the way we live.

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Can We Pull Carbon Out of the Air?

Aug 12 2024 25 mins

The Paris Climate Agreement says we need to reach “net zero” carbon emissions by 2050. That means for every new carbon molecule we put in the air, we have to take one out. Even the most optimistic forecasts still anticipate burning fossil fuels well past that date. So how do we balance the carbon books? Enter direct air capture, or DAC — a mechanical process that sucks carbon

Has the Moment for Hydrogen Finally Arrived?

Aug 05 2024 22 mins

Hydrogen has long been the great hope of the environmental movement. Hydrogen-powered cars; airplanes; even home heating. A single molecule could power it all. Much of that has gone nowhere. But now, hydrogen is being touted as the answer to carbon-free steel. Can we trust in our hydrogen future this time? To explore that question, host Arielle Duhaime-Ross talks to Rachael Fahkry,

Keeping Cool Without Warming the Planet

Jul 29 2024 26 mins

Heat kills more people in the United States than any other weather event, and scientists expect the earth to continue to get hotter. Unfortunately, one of the most effective tools we have to combat heat — air-conditioning — also contributes to global warming. The hotter we get, the more AC we’ll need: It’s a conundrum. So how do we keep cool without making the planet hotter

Is the U.S. Ready for a New Nuclear Age?

Jul 22 2024 32 mins

The United States was once on track to be a world leader in nuclear power, building more than 100 plants in the 1970s and 1980s. But cost and safety concerns led to decades of decommissioning old plants and canceling plans to build new ones. Now, with clean energy production a top priority, there are signs of a revival. Reactors at the first new nuclear plant to be built in almost

The Great American Road Trip, Reimagined

Jul 15 2024 30 mins

Americans drive more, drive further, and pay less for fuel than people in other developed countries. Partly for this reason, our vehicles are more than just a means of transportation — they’re extensions of who we are. So persuading Americans to swap out gas-dependent cars for EVs is a different — and in many ways more difficult — challenge. What’s it going to take to get

Climate Change and the Surprising Success of Solar Power

Jul 08 2024 27 mins

In the past 50 years, solar energy has surpassed all expectations. Even early solar experts couldn’t predict how affordable and widespread it would become. The story behind its success involves Einstein, US presidents, obscure legislation and a global relay race. Now the question is – What can the rise of solar power teach us about the future of other climate technologies? Join

Introducing: The Great Rebuild

Jun 24 2024 2 mins

We’re currently involved in one of the most ambitious projects we, as humans, have ever attempted: Rebuilding the world, pretty much from the ground up, in order to switch from fossil fuels to clean energy sources. In this season of The World as You'll Know It, science journalist Arielle Duhaime-Ross goes deep inside the world of cutting-edge climate technologies and asks: How is

The Race to Control AI

Aug 29 2023 30 mins

In our final episode, Host Gary Marcus shares his hopes for and fears about an AI-driven future. On the one hand, AI could accelerate solutions to some of society’s most difficult problems; on the other, it could deepen existing problems and create new existential risks to humanity. Getting it right, Marcus emphasizes, depends on establishing both national and international stand

When Bots Become Our Friends

Aug 22 2023 33 mins

Some people use chatbots for therapy. Others have fallen in love with them. And some people argue that AI systems have become sentient and are entitled to certain rights. In this episode, Gary Marcus explores our relationship with AI technology — how it’s changing and where it might lead. He speaks with Blake Lemoine, an engineer who believes that a Google program has achieved

AI Took My Career!

Aug 15 2023 28 mins

The emergence of generative AI threatens to automate millions of jobs, potentially ushering in a new and unprecedented wave of job displacement. In the past, newly created jobs replaced those lost. Will that happen this time? To discuss this, Gary Marcus is joined by Amy Winter, a concept artist who sees generative AI as a threat to her career, Brian Merchant, the technology column