Hunting Fireflies for Fun (and Profit)

Fireflies kept in jars during an activity promoting protection of fireflies in Guangzhou in China's southern Guangdong province. STR / AFP / Getty Images

From the 1960s well into the 1990s, thousands of children in the United States were actually paid to hunt fireflies. Join the guys as they explore the strange story of Sigma and firefly hunting — and get surprised by an unexpected guest.