Global warming, air quality, and the "Dark Day" of 1780. New York's air quality catastrophe has some parallels in history, but climate change also makes it unique.
The 50 Most Important Things in History. My new book will be out June 20 on Kindle. Pre-ordering it is a great idea!
Some thoughts on the Tiananmen Square massacre. The 1989 massacre of pro-democratic demonstrators continues to resonate throughout recent world history.
Free history books! The man who survived the end of the world. George Sphrantzes survived the fall of Constantinople to the Ottoman Turks in 1453. His book is online, for free.
Introducing The Morning History Show. My new YouTube podcast profiles historical news that readers of this blog might find interesting.
The organic blockbuster: the original release of "Star Wars." The triumph of the original Star Wars was not driven by marketing. It probably couldn't happen today.