SYMHC Classics: The Discovery of 'Planet' Cer...

Humans have been exchanging tokens of friendship since before recorded history. From calling cards to Valentines to Christmas cards, the modern greeting card industry evolved. Research: “America’s First Christmas Card.” Albany Institute of History and Art. https://www.albanyinsti ...  Show more

This 2019 episode covers the color blue, the most popular color in many parts of the world. But many ancient languages didn’t have a word for blue, and some languages still don’t.See omnystudio.com/listener for privacy information. 

Sure today Mars would kill you with its thin, toxic atmosphere and cold desert temperature swings of 100 degrees,but early on it and Earth were practically twins. Find out how the two planets diverged and if there might be life on the Red Planet, in this classic episode.

It seems like we largely take it for granted these days, but the fact that we have humans living in space is the realization of a scientific dream a century old. Visit the space stations orbiting Earth past, present and future in this classic episode.See omnystudio.com/listener f ...  Show more

From the ancient Egyptians to 16th-century scientists to NASA today — fascination with the Red Planet spans thousands of years. But Mars holds endless mysteries. How close are we to finding them out? Learn more about your ad choices. Visit podcastchoices.com/adchoices 

Dive into the latest discoveries about Jupiter’s moons Ganymede, Europa, and Io with Scott Bolton, the principal investigator for NASA’s Juno mission. We share analysis of the data collected by the spacecraft and look forward to upcoming exploratory missions to Jupiter’s moons ...