Una McIlvenna is a literary and cultural historian specializing in early modern and 19th-century Europe. Her most recent book, Singing the News of Death, explores the phenomenon of execution ballads. She is also the author of Scandal and Reputation at the Court of Catherine de Medici. Una is Honorary Senior Lecturer at the Australian National University, and can be reached at unamcilvenna.com.

Pat McManamon's sportswriting career has spanned more than 35 years and included stops at ESPN and the Akron Beacon-Journal. He shares a love of history with his older brother, a Renaissance historian and nautical archaeologist.

Hadley Meares is a historical journalist based in Los Angeles. Her work has appeared in outlets including Aeon, LA Weekly, LA Magazine, Curbed LA, LAist, and Atlas Obscura. She is also a historical tour guide in Los Angeles. You can find her recent work and upcoming appearances at hadleymeares.com.

Antonio Mejías-Rentas is a longtime journalist based in Los Angeles. He tweets @lataino.

James Edwards Mills is a freelance journalist, author, outdoor guide, and independent media producer. Mills is the author of The Adventure Gap: Changing the Face of the Outdoors and co-writer/co-producer of the documentary film "An American Ascent."

Kai Mora is an Africanist, historian and writer based in New York. She is the Senior Fellow at the African History Project and a graduate student at the City College of New York.

Dr. Nicholas Morton is an Associate Professor at Nottingham Trent University in the UK. The author or editor of many books and articles, his most recent publication is The Mongol Storm: Making and Breaking Empires in the Medieval Near East (Basic Books).

Chris Mueller is the co-host of the PM Team with Poni and Mueller on Pittsburgh's 93.7 The Fan, Monday-Friday, 2-6 p.m. ET. On Twitter, find him @ChrisMuellerPGH, which is mostly a respository for dog and food pictures.