An Irish pound banknote featuring and illustration of Queen Medb / Wikimedia Commons By Dr. Noémie Beck...
Artist’s impression of what the view might be like from the surface of the exoplanet TRAPPIST-1f. NASA/JPL-Caltech...
The view from Wyoming County, Pennsylvania. Cropped from nicholas_t/flickr By Dr. Kenneth M. Johnson / 02.20.2017 Professor...
Bing Crosby / Wikimedia Commons By Dr. Monica Bowen / 08.27.2014 Professor of Art History Seattle University...
By Dr. Ian Kershaw / 04.27.2005 Professor of Modern History The University of Sheffield From Open University...
By Leslie Garrett / 02.22.2017 Is Addiction the Result of Nature or Nurture? If there’s one constant...
Striking steel mill workers holding bulletins, Chicago, Illinois, September 22, 1919. ExplorePAhistory.com By Dr. Paula Fortier /...
Photograph of Geronimo kneeling with his rifle, by Ben Wittick, 1887 / Wikimedia Commons In 1906, Geronimo...
Millions of people are left dead or disabled by surgical complications each year when one simple piece...
By Melissa Bates / 02.06.2017 Surrounded by others yet alone We live in a very busy world....
By Melvin McCleod / 02.20.2017 Featured image by: Chögyam Trungpa Rinpoche The Power of Saying No In...
Frog skeleton sketch by Pflüger Lecture by Dr. Alexander Klein / 12.01.2016 Associate Professor of Philosophy California...
A Polish woman decorates her tent, in an American Red Cross camp in Tehran, Iran, 1942 /...
02.20.2017 Photos by Sina Weibo Zhao Yongjiu, a 56-year-old street cleaner from Shenyang, China, recently won the...
“School Begins,” Puck, January 25, 1899. By Ellen Adams and Dr. Amy Kohout / 08.01.2016 Adams:...
War brought destruction across the South. Governmental and private buildings, communication systems, the economy, and transportation infrastructure...
The attempted arrest of the “Five Members” by Charles I in 1642, by Charles West Cope /...
17,000-year old cave paintings from the Lascaux caves in southwestern France. / Wikimedia Commons By Dr. Eugene...
Do you see happiness as within your control to improve? A new study has linked this belief...
Astronomers are borrowing principles applied in biology and archaeology to build a family tree of the stars...
By Michael Gerson / 02.19.2017 Washington Post Columnist In early January, Speaker Paul Ryan met on...
White House / U.S. National Archives and Records Administration By Louisa Hotson / 08.09.2016 PhD Candidate in...
“Mulberry Street, New York City,” ca. 1900, Library of Congress By Jacob Betz / 08.01.2016 PhD Candidate...
Slave shackles in a display case at the National Museum of African American History and Culture in...
The Four Horsemen of the Apocalypse, print by Albrecht Dürer, 1498 / Metropolitan Museum of Art, New...
The Great Mosque of Divriği, photograph by Avniyazici By Hugh Jeffrey / 01.16.2017 PhD Candidate in Archaeology...
A mountain stream / Photo by Dilshad Roshan, Wikimedia Commons By Dr. Noémie Beck / 12.04.2009 Professor...
Anatolian nazar symbol / Wikimedia Commons By Dr. Güliz Ulu / 05.24.2016 Professor of Linguistics Huazhong University...
The Battle of Grunwald (July 15, 1410), by Jan Matejko, 1878 / National Museum in Warsaw, Poland...
Roman mint die / British Museum, London Introduction The Roman Empire at the end of the Third...