99% Invisible Roman Mars

Margarine is yellow, like butter, but it hasn't always been. At times and in places, it has been a bland white, or even a dull pink. These strange variations were a byproduct of 150-year war to destroy margarine, and everything that it stands for. During this epic fight for survival, margarine has had to reinvent itself, over and over again.

Rioters carried many familiar flags during the January 6th insurrection at the United States Capitol -- Confederate, MAGA, as well as some custom-made ones like a flag of Trump looking like Rambo. Except for onlookers who were already familiar with the design, it would have been easy to overlook one particular bright yellow flag with three red horizontal stripes across the center. This was the flag of South Vietnam.

When Sears sold mail order houses that you assembled yourself

When it comes to English spelling and pronunciation, there is plenty of rhyme and very little reason. But what is the reason for that? Why among all European languages is English so uniquely chaotic today?

The weirdness of Presidential libraries

The great Jacob Goldstein, author of Money: The True Story of a Made Up Thing, stops by to tell us two stories about the design of paper currency around the world. First, the story of the making of the Euro banknotes, the design of which was supposed to unify Europe and not rely on any one country's national heroes or monuments. Then we learn about China's early pioneering experiments in paper currency, hundreds of years before it caught on in the rest of the world.