WAR

The First World War was an unprecedented catastrophe that shaped our modern world. Erik Sass is covering the events of the war exactly 100 years after they happened. This is the 190th installment in the series.

Hungarian brothers László and György Bíró are credited with inventing the pen we still use today.

In his engrossing new book, The Billion Dollar Spy, David E. Hoffman takes readers into the CIA’s Moscow station during the Cold War, telling the astonishing story of how spies recruited agents, and what happened when things went wrong.

Everyone from New England Patriots’ coach Bill Belichick to Tupac Shakur has supposedly read the 2500-year-old text’s 13 chapters on the 13 aspects of warfare.