For hundreds of years, enslaved people were bought and sold in America. Today most of the sites of this trade are forgotten. We photographed 12 of them.

In 1906, the U.S. Supreme Court allowed Chicago to move forward with a spectacularly disgusting feat of modern engineering.

The Editor of the American Historical Review weighs in on recent historiographical debates around the New York Times' 1619 Project.

How barbed wire sparked a cowboy war and changed the American West.

The results of the 1920 census kicked off a bitter, decadelong political squabble. Could the same happen again in 2020?

Satellite images dating back to 1975 allow researchers to map how millions of cul-de-sacs and dead-ends have proliferated in street networks worldwide.

Another news cycle, another media mogul stirring up electoral buzz.