Adam Higginbotham writes for The New Yorker, The New York Times Magazine, Wired, GQ and Smithsonian. He is the author of the book Midnight in Chernobyl: The Untold Story of the World's Greatest Nuclear Disaster.

Abigail Higgins is a journalist and writer in Washington D.C. focusing on health, gender, and international affairs.

L. Stuart Hirai, an independent historian of the 100th/442nd Regimental Combat Team, serves on the board of governors of the Go For Broke National Education Center.

Sophia Hollander is an award-winning journalist and editor whose work has appeared in The New Yorker, The New York Times and the Wall Street Journal.

James Horn, historian and president of the Jamestown Rediscovery Foundation, is the author of A Brave and Cunning Prince: The Great Chief Opechancanough and the War for America, among other books.

Dr. Vince Houghton, historian and curator at the International Spy Museum, is the author of Nuking the Moon and Other Intelligence Schemes and Military Plots Left on the Drawing Board.

Tera H. Hunter is professor of history and African American studies at Princeton University and the author of Bound in Slavery and To Joy My Freedom_, among other books. Follow her on Twitter:_ @TeraWHunter.

Tharik Hussain is a fellow at the Centre for Religion and Heritage at the University of Groningen and the Royal Geographical Society in London. He is also an award-winning author, journalist, travel writer. His latest book Ramadan Mubarak: a Little Inspiration for the Blessed Month has been published by Summersdale.

Volker Janssen is a professor of California State University Fullerton who specializes in the social, economic, and institutional history of California.