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In early 2023 ChatGPT blew up the internet. It’s an AI app that can create any piece of writing you ask for. Poems, homework, lyrics, essays, outlines, recipes, interview questions, and even code. All are indistinguishable from something written by a person, all instantaneous and free.

In schools, cheaters began cheating immediately. Educators were horrified, calling it the end of homework, college-entrance essays, and even writing skills. New York City schools banned it. Experts called it a potential factory for misinformation (ChatGPT routinely writes authoritative-sounding articles that are simply wrong). Everyone agrees that ChatGPT is disruptive. But how do we keep the good—and prevent the terrifying?

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From NASA helicopters in space to robot bouys at sea, “CBS Sunday Morning” correspondent David Pogue is covering all the latest innovations across tech and science on season 2 of Unsung Science. Hear interviews with industry leaders who take you behind the scenes of the world’s greatest advances in transportation, food, space, internet, and health. New episodes every other Friday.

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In “Back to Titanic” Part 1, David Pogue told of his invitation to join an expedition to visit the wreck of the Titanic in a custom submersible. The company, OceanGate, ordinarily charges $250,000 per person, as part of a new wave in adventure travel.  

Bad weather immediately canceled the dive that Pogue and the “CBS Sunday Morning” crew were scheduled to join—but the CEO offered a consolation dive to the Grand Banks. The sights were said to include shark breeding grounds, towering underwater cliffs, and marine species never seen before. 

Just as the sub was descending beneath the waves, the order to halt came from mission control.  

In this episode, the story concludes. 

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The wreck of the Titanic lies about 2.4 miles below sea level. Only five submersibles in the world can carry people to that depth—and four of them have been retired or reassigned. The one remaining sub is something special. First, it holds five people comfortably (instead of two or three uncomfortably). Second, it’s the only one made of carbon fiber. And third, you can buy your way onto it. For $250,000, OceanGate Expeditions will take you down to visit the world’s most famous shipwreck. Deep sea is the new outer space. So when OceanGate invited David Pogue and a “CBS Sunday Morning” crew to join the latest expedition, they jumped at the chance. Here’s what happened during their eight days at sea.

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If you type the word “carrot” into Google Images, you get thousands of photos of the classic root vegetable. They’re all full-length, orange, straight, and pointy. Which is a little odd, because 70% of all the carrots we buy are, in fact, baby carrots.

Or at least we think they’re baby carrots. Turns out baby carrots aren’t baby at all. And the story of their creation is twisty, uplifting, and super satisfying. It’s all about a California carrot farmer with a distaste for waste—and a frustrated ex-wife.

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People talk about greenhouse-gas emissions from cars, planes, and factories, but one source out-pollutes them all: Cows. Raising meat animals like cows generates more methane than the entire fossil-fuel industry. So Pat Brown left his job as a Stanford biochemistry professor to dedicate his life to fixing the problem. He vowed to create perfect meat replicas using only plant ingredients. His Impossible Burger is already a megahit—but can he be serious about replacing all beef, pork, chicken, and fish by 2035? 

Guest: Pat Brown, CEO and founder, Impossible Foods

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