Bubble

For decades, rising property prices helped enrich China. Now one of the country's biggest developers is facing bankruptcy. Policymakers fear it could send China's financial system into a tailspin.

The NHL is the first of the four major North American pro sports leagues to crown a champion during the pandemic. Some players spent over two months in a bubble, with no COVID-19 cases reported.

Scientists at the University of Texas listened to the bubbles in a champagne and a sparkling wine and found that the more expensive product had smaller, busier bubbles.