Last week, officials in San Francisco decided to scrap a plan that would have allowed law enforcement to use robots in situations that may require “deadly force.” Specifically, according to the language of the ordinance that the city’s board of supervisors initially approved, when “risk of loss of life to members of the public or officers is imminent and outweighs any other force option available.” The plan was rolled back after a public backlash, but the technology is out there and it may be just a matter of time before it’s used by local police departments. Marketplace’s Kimberly Adams spoke with Ryan Jenkins, a professor of philosophy and senior fellow at the Ethics + Emerging Sciences Group at California Polytechnic State University, San Luis Obispo. There’s a concern, he said, that the deployment of robots would lower barriers to the use of force, making violence a more common occurrence in police work.

Unions have come to the video game industry. They started small at just one indie developer about a year ago, then those efforts started to spread. Workers at some of the biggest names in the business have started organizing — at Activision Blizzard and recently at ZeniMax, a company owned by Microsoft. This sudden upswell is shaking up an industry that has long been known for grueling hours, low pay and a workforce that is not especially diverse. So how did the union movement go from 0 to 60, and where is it headed from here? Marketplace’s Meghan McCarty Carino spoke with Nicole Carpenter, a senior reporter for Polygon, a gaming and entertainment news site. She recently wrote an explainer about unions in the industry. She said a turning point came in 2021 when California sued Activision for an alleged pattern of sexual harassment and discrimination, which set off a chain of investigations and lawsuits that brought the problems of the industry into the public eye.

Hurricane season is officially over. There were 14 named tropical storms this year, three of which made landfall as hurricanes on the U.S. mainland and Puerto Rico, including Hurricane Ian. The climate crisis, along with the boom in coastal development, have given hurricanes the power to cause more death and destruction. Marketplace’s Amy Scott spent a day with people who try to predict such disasters for our climate solutions podcast, “How We Survive.” She found out that climate change is making their job more complicated.

This episode originally aired Nov. 16 on the “How We Survive” podcast.

Despite the bankruptcies, hacks and general foul mood in crypto, one metric is moving in the right direction. As we talked about earlier this year, ethereum — the world’s second-largest crypto network — made a move to reduce the energy used in the “mining” process for authenticating transactions on the blockchain. In September, ethereum switched from the so-called proof of work method, in which a bunch of miners compete to solve an authentication puzzle with giant banks of supercomputers, to a method called proof of stake, in which just one miner validates a transaction. That requires much less electricity. Marketplace’s Meghan McCarty Carino spoke with Alex de Vries, the founder of Digiconomist, a website that tracks cryptocurrency energy use, about just how much less energy the ethereum network is consuming, based on a paper that De Vries recently published.

Researchers at the Massachusetts Institute of Technology have solved a particularly challenging differential equation that dates back to the early 1900s. The explanation gets pretty technical pretty fast, but the point is that solving this equation enabled researchers to create a new type of artificial intelligence system that can learn on the spot and adapt to changing patterns, as opposed to traditional systems in which the machine learning is based on existing patterns or expected outcomes. Marketplace’s Kimberly Adams speaks with MIT researcher Ramin Hasani, who said it’s called a liquid neural network, and it kind of works like a human brain.

Most websites have code running in the background to help the site run better and, of course, to target advertising. A recent investigation from “The Markup” found many tax-filing sites were sharing users’ financial data with Facebook using a code called Meta Pixel. Marketplace’s Kimberly Adams speaks to Simon Fondrie-Teitler, an infrastructure engineer at The Markup and co-author of this investigation.

Data regulators in Ireland fined Meta earlier this week for failing to safeguard the sensitive information of Facebook users. The tech giant was fined the equivalent of about $275 million for a 2019 data leak, when personal information from more than 500 million Facebook users was scraped off the site and then published in a hacker forum. Marketplace’s Kimberly Adams speaks with Adam Satariano, a tech correspondent for The New York Times based in London, who reported on this story. He says this recent punishment is just one of several fines the Irish government has imposed on Meta, and it’s part of a larger trend.

While Elon Musk has been celebrating a bump in users and app downloads since he took over Twitter, many longer-term users say they’re seriously considering leaving. Some are even holding mock funerals anticipating the site would break down. This week, Twitter users discovered the company is no longer enforcing its COVID-19 misinformation policy. But if Twitter actually fell apart, what would happen to the distinct spaces there, like what’s commonly referred to as “Black Twitter”? Marketplace’s Kimberly Adams speaks with Shamika Klassen, an information science Ph.D. candidate at the University of Colorado, Boulder. She co-authored a research article about Black Twitter last year.

If you’re a regular listener of “Marketplace Tech,” thank you. We’d love to hear from you. You can drop us a line anytime at [email protected]. We’d also appreciate it if you took the time to leave us a rating and review wherever you listen to the show. It really helps people find us, so thanks.

Earlier this month, the SS Sally Ride cargo capsule made its way to the International Space Station. The spacecraft was carrying hundreds of pounds of scientific experiments. One of them involves what’s called a 3D BioFabrication Facility, which can build human tissue and organs in space that scientists can’t make on Earth. Marketplace’s Kimberly Adams speaks with Rich Boling, vice president at Redwire, which manufactures the equipment for these experiments. She asked him about how 3D printing works when you’re printing something alive.

If you’re a regular listener of Marketplace Tech, thank you. We’d love to hear from you. You can drop us a line anytime at [email protected]. We’d also appreciate it if you took the time to leave us a rating and review wherever you listen to the show. It really helps people find us, so thanks.

Some of the country’s biggest advertisers are balking at the new Twitter under Elon Musk. A recent report from Media Matters for America found at least half of Twitter’s  100 biggest advertisers have either announced they will stop running ads on the platform or just seem to be stopping more quietly. But not all businesses can easily walk away. Take sex workers. A recent survey from the website Sex Work CEO shows that Twitter is incredibly important for adult content creators, helping them connect with fans, find new ones and promote their legal businesses. Marketplace’s Kimberly Adams speaks with MelRose Michaels, the founder of Sex Work CEO. Michaels explained how adult content creators are responding to all the recent changes at Twitter.