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The Wall Street Journal highlights a study by Clemson University economists Peter Blair and Bobby Chung which purports to show that occupational licenses, which legally permit workers to do certain jobs like barbering or pest control, reduce income inequality between men and women and between whites and African Americans.

According to the report, occupations that require licensing see a decline in wage inequality between men and women between 36% and 40%, and a decrease between black men and white men of 43%.

Why it matters: Occupational licensing has been criticised by both Democrats and Republicans as unnecessary barriers erected by vested interests to keep new entrants out of the market, which reduce employment and raise prices. But Blair and Chung argue that they also enable workers who are discriminated against an opportunity to signal their competence to prospective employers.

Go deeper

Minnesota schools "all over the board" with mask-wearing guidance

Illustration: Brendan Lynch/Axios

Minnesota and federal health officials are urging universal masking in schools this fall, but not all local districts are following suit so far.

Driving the news: The Minnesota Department of Health issued new back-to-school guidance Wednesday, encouraging mask use indoors for students and teachers regardless of vaccination status.

  • Unlike last year, the state won't mandate mask use. Decisions will be up to local districts and school boards.
Updated 37 mins ago - Sports

Olympics dashboard

Team USA's Simone Biles during the women's team final on day four of the Tokyo 2020 Olympic Games at Ariake Gymnastics Centre on Tuesday in Japan. Photo: Fred Lee/Getty Images

🤸🏾‍♀️: Simone Biles reacts to "love and support" after withdrawing from all-around gymnastics and team finals, citing her mental health

🏃: U.S. pole vaulter Sam Kendricks withdraws from Games after positive coronavirus test

🏊‍♂️: Caeleb Dressel wins gold in men's 100m freestyle —Bobby Finke wins gold in first men's Olympic 800m freestyle

📷: In photos: Tokyo Olympics day 6 highlights

🗓: The Olympic events to watch today

💵: Olympic athletes see more sponsorship opportunities

🏃‍: Female Olympians push back against double standard in uniforms

Go deeper: Full Axios coverage - Medal tracker

Felix Salmon, author of Capital
54 mins ago - Economy & Business

Giant earnings growth for the world's largest companies

Illustration: Aïda Amer/Axios

Never in the history of capitalism have the world's biggest companies grown as fast as the tech giants in recent years.

Why it matters: A series of stunning earnings reports this week — with another one likely to arrive Thursday afternoon, from Amazon — has underscored the astonishing growth among a group of companies that were already some of the most profitable of all time.