Happy Lunar New Year! According to the Chinese lunisolar calendar, the new year began Saturday. For many, like our host Regina G. Barber, this calendar and its cultural holidays can feel completely detached from the Gregorian calendar. Growing up, she associated the former with the Spring Festival and getting money in red envelopes from relatives, and the other with more American traditions. But the Chinese calendar has a deep, centuries-long shared history with the Gregorian calendar. To learn more about this shared history, Gina talks to scientists and historians, who spill the tea about the science behind calendars, and how both calendars and the Chinese Lunar New Year celebration played a key role in the rise and fall of empires. Email us [email protected] for more science history. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy