Bettina Forget, Sylvie Ouellette and Erica Pimentel are members of the Public Scholars program at Concordia University in Montreal. They talk to us about the link between art and space science, how bacteria scavenge iron from their surroundings, and how accountants work with blockchain. We also talk about a problematic article in a chemistry journal.

Dr. Lamia Balafrej of UCLA is an art historian specializing in the medieval Islamic period. Her work illuminates the connection between slavery and technology, which remains an important feature of the global economy today.