Big Ideas Simply Explained is a 78-book series with 78 released primary works first released in 1998 with contributions by D.K. Publishing, R.G. Grant, Will Buckingham, Douglas Burnham, Clive Hill, Peter J. King, John Marenbon, Marcus Weeks, Peter Singer, Nigel C. Benson, Catherine Collin, Voula Grand, Merrin Lazyan, Joanna Ginsburg, Antón Corriente, Niall Kishtainy, Paul Kelly, Shulamit Ambalu, Paul Kelly, Sam Atkinson, Stanley Wells, John Farndon, Danny Leigh, Louis Baxter, Kieran Grant, Damon Wise, Paul Ruditis, Paul J. Ruditis, James Canton, DK, Shanna Hogan, and Various.