VIDEO: Their house looks more like artwork in progress than an average California home. Every square inch in Cheri Pann’s and Gonzalo Duran’s house is covered with mosaic tiles. VOA visited the couple to take a look.

ON THIS DAY IN AMERICAN HISTORY On March 19, 1931, Nevada legalizes gambling. The move came as the state faced a steep economic downturn due to the Great Depression and a decline in a once-thriving mining industry. Initially, gambling attracted organized crime, with noted mobster Benjamin “Bugsy” Siegel, becoming a driving force behind the development of Las Vegas’ famous strip. Today, gambling makes up the vast majority of the state’s tax income, and Las Vegas is a globally popular tourist attraction, offering gambling, nightclubs, concerts and sporting events.

A student-run stock exchange that exists online and in the classroom is among a number of simulated companies being formed in high schools across the United States. The exchange is a virtual enterprise that teaches the complexities of business and the latest technology behind the financial markets.

VIDEO: No U.S. state produces more popcorn than Nebraska. The factory called Preferred Popcorn smells like a giant movie theatre and is a major producer in America. VOA traveled to Nebraska to find out how it’s all done.

Adolescents reporting symptoms of major depression increased 52 percent between 2005 and 2017 — from 8.7 percent to 13.2 percent — among youth from the ages of 12 and 17. The increase was even higher — 63 percent from 2009 to 2017 — among young adults between the ages of 18 and 25.

An influential Iranian cleric says Iran might bring Shiite militias to the country from other parts of the Middle East to fight threats to the government, says Musa Ghazanfarabadi, head of the Tehran Islamic Revolution Courts, when speaking to religious students in Qom this month.