For almost 200 years, the Braille system has turned the written word into raised bumps that blind people can read. But what about images? A device called an embosser pricks and crimps 3D dots and lines on paper to produce a tactile image, allowing people to perceive pictures through touch. Chancey Fleet is a technologist at the Andrew Heiskell Braille and Talking Book Library in New York City. She’s Blind and teaches low-vision and blind patrons to print their own images.

Mathematics can be a subject that’s a bit unrelatable for some. Perhaps you recall sitting in a math class at some point wondering, “When am I ever going to use quadratic equations?” But a new book wants us to reconsider math as something that gives us fundamental building blocks for not just the technology we use every day, but also the natural world around us. That book is called “The Big Bang of Numbers: How to Build the Universe Using Only Math.” Marketplace’s Kimberly Adams recently spoke with author Manil Suri about his book and what motivated him to write it for the mathematically uninterested.

The No. 1 social networking app on Apple’s U.S. app store right now is called BeReal, as in being your real self online. No filters, no carefully staged shots. The concept, and the format, are so popular, TikTok launched its own version — both on its home app and as a standalone — called TikTok Now. Marketplace’s Kimberly Adams speaks with Erica Bailey, a Ph.D. candidate at Columbia University Business School, who studies authenticity and marketing. On BeReal, Bailey said, you can only post once a day and only when you receive an alert, which can come at ANY time.

Last night NASA completed a first-of-its-kind mission to steer a spacecraft into an asteroid. The asteroid was not hurtling toward Earth, threatening to wipe out civilization, and the goal was not to blast it to smithereens, “Armageddon” style, but rather to give it enough of a bump to slightly change course. The Double Asteroid Redirection Test, or DART, took aim at a small asteroid called Dimorphos, which is about 11 school buses wide. It’s orbiting a bigger asteroid called Didymos, about 7 million miles from Earth. Marketplace’s Meghan McCarty Carino spoke with Nancy Chabot, DART mission coordination lead at the Johns Hopkins Applied Physics Laboratory, about the mission.

Painters, musicians, writers — artists in virtually every medium — often struggle to make enough revenue to create their art because there are so many layers between them and the people who buy their work. We’re talking gallery commissions, record label contracts, even bookstore overhead costs. Increasingly, tech companies add another layer. And many argue that’s bad for the arts. Activist-journalist Cory Doctorow and law professor Rebecca Giblin addressed these issues in their book, “Chokepoint Capitalism: How Big Tech and Big Content Captured Creative Labor Markets and How We’ll Win Them Back.” It will be out Tuesday. Marketplace’s Kimberly Adams speaks with Doctorow about what chokepoint capitalism entails.

A Texas law banning social media companies from applying certain content moderation policies was recently upheld by the 5th U.S. Circuit Court of Appeals. The 2021 law prohibits platforms from banning or restricting content based on the “viewpoints” of users. Now, tech companies will have to appeal to the Supreme Court if they want to avoid legal risk in the state. Marketplace’s Kimberly Adams spoke about this case on the show back in May, when the Supreme Court put the implementation of the law on hold while the case ran its course. Issie Lapowsky, chief correspondent at Protocol, helped Adams back then and joins her again for an update. She says tech companies are in a tough spot.

When Hurricane Fiona recently hit Puerto Rico, the storm brought wind, water and major flooding to the island. Local authorities are still assessing the damage, but so far we know that some people died, others lost their homes and just about everyone lost electricity. Unfortunately, we’ve been here before. After Hurricane Maria in 2017, billions of federal dollars went to Puerto Rico, a U.S. territory. Marketplace’s Kimberly Adams speaks with Julio López Varona, co-chief of campaigns at the advocacy group Center for Popular Democracy, about whether that technology investment did anything.

The word “meme” might bring to mind a viral picture of a weird-looking cat with silly text, a tweet or video showing up everywhere online. But some political memes can be downright dangerous, according to a new book — “Meme Wars: The Untold Story of the Online Battles Upending Democracy in America.” Its authors argue that memes have inspired cultural battles over the last decade both on- and offline. Marketplace’s Kimberly Adams spoke with Emily Dreyfuss, a senior editor at Harvard Kennedy School’s Shorenstein Center and one of the book’s co-authors, about how far-right or extremist groups use memes as weaponized tools in their attempts to influence American politics.

Since the Supreme Court overturned Roe vs. Wade back in June, many states have been working on new laws related to digital privacy and access — or restricting what kind of information can be shared online. This trend highlights the increasing disparity between states in terms of what’s legal online and what might be in the future. Marketplace’s Kimberly Adams speaks with Matt Perault, director of the Center on Technology Policy at the University of North Carolina, Chapel Hill, and a consultant on technology policy issues. He wrote an essay for Wired on what might happen when the rules for what you can say and do online are different from state to state. Perault says this kind of digital fragmentation is a relatively new concept in the U.S., but some people already know what it’s like.

A European Union court had bad news for Google last week, upholding an earlier ruling against the web search giant. It accused the company of engaging in anti-competitive behavior. That ruling also upholds much of the record fine the EU imposed on the company, equivalent to more than $4 billion. And in California, Amazon was hit with yet another lawsuit last week focused on the company’s price-setting power. Marketplace’s Kimberly Adams recently spoke with Matt Stoller, director of research at the American Economic Liberties Project, about how the Google case in Europe might affect things here in the U.S.