Jeanhee Kim is an editor and writer in New York City.

Dave Kindy is a freelancer in Plymouth, Massachusetts who writes about history and other topics for HISTORY.com, Smithsonian magazine, National Geographic, The Washington Post and other outlets. He is currently writing a nonfiction book about World War II.

Christopher Klein is the author of four books, including When the Irish Invaded Canada: The Incredible True Story of the Civil War Veterans Who Fought for Ireland’s Freedom and Strong Boy: The Life and Times of John L. Sullivan. His work has appeared in numerous publications, including The Boston Globe, The New York Times, and National Geographic Traveler. Follow Chris at @historyauthor.

Lindsey Konkel is a freelance journalist based in southern New Jersey. Her focus is science and health. She loves when these topics intersect with history.

Freda Kreier is a freelance science journalist based in Washington, D.C. Her work has appeared in the New York Times, Nature, and Undark. You can see more of her words on Bluesky and at www.fredakreier.com.

Sharmila Kuthunur is a Seattle-based science journalist focusing on astronomy and space exploration. Her work has also appeared in Scientific American, Space.com, and Astronomy, among other publications. She earned a master's degree in journalism from Northeastern University in Boston. Follow her on BlueSky: @skuthunur.bsky.social

Greg Lewis is an award-winning documentary filmmaker and journalist. He is co-author, with Gordon Thomas, of Defying Hitler: The Germans Who Resisted Nazi Rule.

Cate Lineberry is a bestselling author and former editor for National Geographic and Smithsonian magazines. Her latest book is Be Free or Die: The Amazing Story of Robert Smalls' Escape from Slavery to Union Hero.

Mario Livio is an astrophysicist and author of the May 2020 book, Galileo: and the Science Deniers. For 24 years he was an astrophysicist at the Space Telescope Science Institute, which operates the Hubble Space Telescope.