In the spring of 2020, 77% of American public schools moved to online distance learning when the pandemic hit, according to data from the U.S. Department of Education. Prior to the pandemic, you could say that schools were trickling into the digital age. Then, when COVID changed everything, they were basically tossed into it. Some educators adapted quickly, like Bebi Davis, who was working as a vice principal in Honolulu at the time. She’s now principal of Princess Victoria Kaiulani Elementary. Going totally virtual, she said, meant introducing an onslaught of technology — videoconferencing, classroom management software and messaging systems. Marketplace’s Stephanie Hughes asked Davis about the school system’s experience adopting so much tech all at once.

Back in 2018 — the last time President Donald Trump led a trade war — some businesses got tariff exemptions if they imported goods that couldn’t be sourced in the U.S. Was the process to apply smooth and transparent? Well … no. Will today’s businesses have the same opportunity? That remains to be seen. Also in this episode: Home improvement stores launch AI helper bots, corporate forecasts aim low, and small businesses hesitate to hire.

Five years ago today, after the World Health Organization declared the COVID-19 outbreak a pandemic, there was a widespread shift to remote work for many workers who were considered nonessential. And people had to get used to seeing their colleagues mainly on a screen. In recent years, some companies have required employees to return to the office full time. But remote work remains a major part of many people’s lives, far more than in 2019. Marketplace’s Stephanie Hughes spoke with Anita Blanchard, a professor of psychological and organization science at the University of North Carolina at Charlotte, about what’s lost when workers don’t interact in the same physical space.

Terri Bromberg lost her home of 20 years in the Los Angeles fires. Rather than rebuild, the artist and professor chose to sell and move elsewhere. Prospective buyers put in bids without being able to see the plot of land in person. In this episode, Bromberg and her real estate agent tell us about the process of selling in the Pacific Palisades since the wildfires. Plus: China announces retaliatory tariffs on some U.S. agricultural products, Americans lose confidence in their financial futures, and why Tesla’s stock price has slumped.

March 11 marks five years since the World Health Organization declared the COVID-19 virus officially a pandemic. Tracking the virus has been key to understanding where outbreaks are occurring and one tracking tool that had been mostly on the shelf prior to the pandemic is wastewater surveillance. That’s pretty much what it sounds like — testing what we flush down the toilet which eventually lands in what’s known as a sewer shed. Marketplace’s Stephanie Hughes spoke with molecular virologist Marc Johnson at the University of Missouri about the advantages of wastewater surveillance. The following is an edited transcript of their conversation.

Overall employment dropped last month, according to the monthly jobs report from the Bureau of Labor Statistics. At the same time, employers added jobs to the economy. Weird, right? Well, two surveys make up the monthly report — one of households and one of employers. And they can disagree. Plus, more part-time workers want full-time jobs, Gap is on a roll, and professional basketball has become a game regulations.

In this week’s Marketplace “Tech Bytes: Week in Review,” TSMC announced it’s investing an additional $100 billion to make chips in the U.S. Plus, a co-founder of the social media platform Reddit joins a bid to buy TikTok. But first, let’s talk about the stock market. A number of tech companies watched their stocks sink this week, when new tariffs on China, Mexico and Canada were put in place. That volatility continued when President Donald Trump backtracked on the policy, at least temporarily.  Marketplace’s Stephanie Hughes spoke with Natasha Mascarenhas, reporter at The Information, to unpack these stories and more.

The Federal Reserve may be steering the economy through another trade war. But this time, the inflation of the last few years complicates its task. Also in this episode: Unemployed Americans struggle to snag new positions, banks’ unrealized losses jump, and an aerospace tech startup sets up shop in Cumberland County, Tennessee.

Today, we’re wrapping up our series “The Infinite Scroll,” where we look at kids’ lives on social media and the risks and rules they face. One approach some states take to creating rules to mitigate risk is known as an age-appropriate design code, a law that puts the onus on tech companies to design products that keep kids safer when they’re on the internet. California passed its Age-Appropriate Design Code Act in 2022, as did Maryland last year. Both have been challenged by lawsuits from the tech industry. State Delegate Jared Solomon, a sponsor and lead author of the Maryland law, explained to Marketplace’s Stephanie Hughes that the oversight effort attempts to prevent manipulation by algorithms. He hopes the industry will begin to “think differently about how they design their products.”

Ask an economist what’s driving decision-making right now, and the answer may well be “uncertainty.” In this episode, the unpredictable environment fuels a range of change: The labor market softens, surveys of the service sector point in opposite directions and Treasury yields sink. Plus, the Commerce Department just dissolved two expert advisory groups, putting the trustworthiness of future federal data into question.