Earlier this week, star gymnast Simone Biles pulled out of two Olympic competitions after she experienced a dangerous case of the "twisties." WSJ's Louise Radnofsky explains how one of the Olympics's biggest stars is helping change attitudes towards mental health and physical safety.

Robinhood built its business around the idea of making it easier than ever for everyday people to invest. Now the company's betting it can "democratize" initial public offerings, too - including its own. WSJ's Peter Rudegeair explains the thinking behind Robinhood's unconventional IPO this week.

Jerome Powell has led the U.S. economy through its pandemic-induced crash and turbulent recovery. But with his first term ending soon, WSJ's Nick Timiraos says some in Washington are questioning whether Powell should be reappointed.