Three former Minneapolis police officers face federal charges that they violated George Floyd’s civil rights during his May 2020 arrest. Here’s what you need to know about the officers and the upcoming trial. Photo: Erin Ailworth/The Wall Street Journal

Amid a surge in cases, some countries are handing out second booster shots. In Israel, early data suggest a fourth vaccine dose can increase antibodies against Covid-19, but not enough to prevent infections from Omicron. WSJ explains. Photo composite: Eve Hartley/WSJ

Boeing’s Starliner spaceship has been hampered by a string of errors and delays. WSJ’s Micah Maidenberg explains why Boeing has struggled to launch the Starliner on schedule and what’s next for the aerospace giant’s space program. Photo: NASA/Joel Kowsky

A group of almost 300 airlines have committed to "net zero" carbon emissions by 2050, but just how are they going to get there? WSJ’s George Downs explores some of the methods the International Air Transport Association has suggested for emissions reduction. Illustration: George Downs

Construction at LaGuardia Airport has frustrated travelers, but relief is in sight. Rick Cotton, executive director of the Port Authority of New York and New Jersey, discusses highlights and renovation challenges. Photo: Craig Ruttle/Associated Press

Travelers who meet certain requirements will be allowed to enter the U.S. beginning Nov. 8. WSJ’s Allison Pohle explains what these new rules mean. Photo: Seth Wenig/Associated Press

Canceled and delayed flights, long lines and packed planes have become the new normal for air travel. WSJ reporter Alison Sider explains the reasons behind the airline disruptions and the ripple effects for passengers planning to travel during the holidays. Photo: Daniel Slim/Getty Images

Available space, weather and air traffic volume are key factors that go into airfield design. Robert Hoxie, who helped redesign Chicago O’Hare’s airfield, explains how runways are mapped out. Photo Illustration: Adele Morgan/The Wall Street Journal

After landing her Shark UL aircraft in Belgium Thursday, 19-year-old Zara Rutherford became the youngest woman to fly solo around the world. Photo: Kurt Desplenter/Zuma Press

Macy’s has long been identified with the start of the holiday shopping season. But the company was hurting even before the coronavirus crisis hit the retail industry, raising questions about how far Macy’s star could fall. Photo Illustration: Jacob Reynolds/WSJ

Warby Parker was one of the original direct-to-consumer brands, but now, the eyeglass-maker’s sales are split about evenly between its more than 140 brick-and-mortar locations and its online store. WSJ’s Charity Scott explains why this split is Warby Parker’s secret sauce. Photo: Adam Falk/The Wall Street Journal

Becoming an Olympic swimmer is an aspiration for thousands of young athletes in the U.S. But it comes at a heavy cost. Club dues alone can set swimmers back thousands of dollars each year. Here’s a breakdown of what it can cost to become an Olympic swimmer.

Belarusian sprinter Krystsina Tsimanouskaya—who, fearing arrest, resisted her team’s attempt to send her home—is safe with Japanese authorities, the International Olympic Committee says. The situation tests the IOC’s aim to run a politics-free Games. Photo: PHOTO: Issei Kato/Reuters

Ever wondered how tennis pros are able to hit the ball with so much force, at extreme angles with incredible accuracy while still keeping it in the court? It comes down to physics. WSJ’s Daniela Hernandez explains what you can learn from the physics that give tennis pros their edge. Photo composite: Adele Morgan

Elite gymnasts Simone Biles, McKayla Maroney, Maggie Nichols and Aly Raisman delivered an emotional account of FBI failures in the investigation of former national team doctor Larry Nassar, in testimony before the Senate Judiciary Committee Wednesday. Photo: Saul Loeb/Associated Press

China is enforcing a strict set of Covid-19 rules at the Winter Olympics to stop the fast-spreading Omicron variant. From a "closed-loop” system to a ban on shouting, WSJ explains how some of these restrictions will work, and why despite all efforts, an outbreak could still derail competitions. Photo: Fabrizio Bensch/Reuters

This year’s Super Bowl drew advertisers willing to pay up to $7 million for a 30-second spot. WSJ advertising editor Suzanne Vranica and reporter Paul Vigna break down what to watch for from both new cryptocurrency brands and old regulars like Budweiser. Photo Illustration: Alexander Hotz/WSJ

Britney Spears's father was removed as conservator of her $60 million estate on Wednesday. Fans outside the courthouse cheered as the suspension brings the pop star closer to unwinding the legal arrangement that has controlled her life for 13 years. Photo: Mario Anzuoni/Reuters

Artist Beeple’s first real-life piece, “Human One,” sold for nearly $29 million at Christie’s on Tuesday. A few months earlier, the artist’s digital collage prompted a craze for nonfungible tokens when it fetched $69 million. Photo: Justin Lane/Shutterstock

More Netflix viewers watched dubbed versions of the South Korean drama “Squid Game” than subtitled versions. WSJ met one of the show’s English-language voice actors to see how dubbing foreign content is fueling the streaming giant’s growth. Photo Illustration: Sharon Shi

Ghost kitchens are popping up all over the U.S. as food delivery soars and dining at restaurants plummets amid the pandemic. These businesses, which can host food preparation for multiple restaurants at a single location, are attracting interest from investors and restaurateurs. Photo: Adam Falk/The Wall Street Journal

Demand for food delivery has soared amid the pandemic, but restaurants are struggling to survive. In a fiercely competitive industry, delivery services are fighting to gain market share while facing increased pressure to lower commission fees and provide more protection to their workers. Video/Photo: Jaden Urbi/WSJ

Two California wine companies are going public this spring, the first major wineries to do so since the late 1990s. Winemakers explain the lessons of past stock offerings from wineries like Mondavi and Ravenswood and why they think the time is now right to join the IPO fray. Photo: Sean Havey for The Wall Street Journal

With food markets on a wild ride lately, cheese has seen more volatility than most. Yet in supermarkets, prices have remained relatively stable. Here’s why sharp changes in wholesale cheese prices are slow to make it to consumers. Illustration: Jacob Reynolds

When it comes to coffee beans, what happens in Brazil doesn’t stay in Brazil. In July and August, a bad frost hit the country's coffee-producing region and analysts say Brazil’s bean shortage is already rattling the global coffee market. So how will the frost affect the price of your morning cup? WSJ’s Shelby Holliday spoke to coffee experts around the world to find out. Illustration: Rafael Garcia

If eVTOL aircraft companies are to achieve their commercial ambition of becoming flying taxis, then first they’ll need to ensure their aircrafts are quiet enough to work in cities without disturbing residents. WSJ’s George Downs looks into just how quiet these crafts need to be to take off. Photo composite: George Downs

Cars today offer high-tech features and gather troves of data to train algorithms. As China steps up controls over new technologies, WSJ looks at the risks for Tesla and other global brands that are now required to keep data within the country. Screenshot: Tesla China

Tesla will move its headquarters to Austin, Texas, said CEO Elon Musk, comparing the current crowded operations at the factory in Fremont, Calif., to ‘Spam in a can.’ He said the electric-vehicle maker would continue expanding in California. Photo: Brendan Smialowski/AFP/Getty Images

Tesla CEO Elon Musk on Saturday turned his first European Gigafactory near Berlin into a fairground where visitors could tour the facility. The project faced some delays and local resistance but Musk said the company expects to start production in November. Photo: Patrick Pleul/Associated Press

Foxconn, the Taiwanese company known for assembling Apple products, has unveiled three electric-vehicle prototypes. WSJ’s Stephanie Yang attended the launch event to see how the company is diversifying its business to gain a foothold in the auto industry. Photo: I-Hwa Cheng/Bloomberg News

As driverless vehicle companies Aurora and Embark are making their stock-market debut this month, WSJ’s George Downs spoke with the CEOs about why they’re focusing on autonomous trucks and whether that could spell a solution for the U.S. truck-driver shortage.

The foreclosure crisis, while healing, is still ongoing in many parts of the country where homeowners are predominately black or populated by other minority groups.

Pretty much ever since he took the helm in January 2014, Federal Housing Finance Agency Director Melvin Watt has been under pressure from housing advocates and some lawmakers to allow mortgage-finance giants Fannie Mae and Freddie Mac to reduce the mortgage principal on at least some home loans.

Nela Richardson, chief economist for brokerage Redfin Corp., and Selma Hepp, chief economist for Zillow Group’s Trulia real-estate website, both said builders aren’t constructing enough entry-level housing to meet demand. They’re focusing more of their resources instead, the economists said, on building pricey homes for buyers with ample credit.

Greece appears to be slipping ever closer to an exit from the euro zone. While a potential catastrophe for the country, it might actually be a good thing for Europe's booming commercial real-estate markets.

So far, commercial real-estate analysts looking at Europe’s booming market are not too concerned that Greece’s turmoil will spread further afield.

Low-wage work is in high demand, and employers are now competing for applicants, offering incentives ranging from sign-on bonuses to free food. But with many still unemployed, are these offers working? Photo: Bloomberg

Airbnb had big plans for the Tokyo Olympics by becoming the official accommodation sponsor, sparking hosts across Japan to prepare for tourists. Now, apartments are vacant and hosts are trying to pare losses following a ban on spectators. Composite: Clément Bürge

In April, Apple began requiring apps to request user tracking permissions. Now, tech giants and small businesses alike say they're losing money due to the new privacy policy. WSJ's Shelby Holliday explains why those costs could be passed to consumers. Illustration: Rafael Garcia

Smart beds tout features like sleep tracking and climate control. But does the technology actually produce a better night’s rest? WSJ asked Dr. Wendy Troxel, a clinical psychologist trained in sleep medicine, for her expert opinion. Photo: Andy Wiebe

Shiba Inu Coin’s recent surge, and subsequent fall in value, is part of a growing trend of meme coins that are rivaling some of the largest digital tokens in the world. WSJ retail investing reporter Caitlin McCabe explains why investors are pouring money into this meme based cryptocurrency. Photo: Amber Bragdon/Getty Images

Instagram’s top executive Adam Mosseri pushed back against some lawmakers’ assertions that social-media products are designed to be addictive, during a Senate Commerce subcommittee hearing Wednesday. Photo: Drew Angerer/Getty Images

Do terms like “nonfungible token,” “minting,” and “gas fees” sound like a foreign language to you? To better understand it -- and explain it -- WSJ’s Joanna Stern turned her son’s art into an NFT on the Ethereum blockchain. Photo illustration: Jacob Reynolds

Waymo is operating fully driverless robotaxis in Chandler, Ariz., and recently took a step toward offering the same to riders in San Francisco. It is a test that could provide a roadmap for Waymo’s expansion and help the Google sister company build a revenue-generating business. Photo: Karl Mollohan

This year, billionaire CEO Elon Musk reached several milestones across Tesla, SpaceX and Starlink. WSJ reporters Rebecca Elliott and Micah Maidenberg break down some of his biggest moments in 2021 and what’s to come in 2022. Illustration: Tom Grillo

Real-estate transactions in the metaverse are reaching record highs. We spoke with companies investing in digital real estate to understand the economic model, and why investors are spending millions on virtual property. Photo: Republic Realm

SpaceX’s Starlink faces safety complaints from China and rival companies. As Elon Musk says there’s plenty of room in space and the race to expand satellite internet networks ramps up, WSJ looks at the risks they could pose. Photo Illustration: Sharon Shi

Starting in February, U.S. cellular carriers will begin to shut down 3G. WSJ’s Joanna Stern got an old iPhone 3G and iPhone 4 working on the old network, in order to remember all it did to shape the smartphone revolution. Photo illustration: Preston Jessee for The Wall Street Journal

Airlines canceled some flights before a new 5G wireless service rolled out, even after Verizon and AT&T agreed to limit the signal around U.S. airports. The FAA says the service could affect airplane safety systems, a claim the wireless industry refutes. Photo: Justin Lane/Shutterstock

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