Theodore Roosevelt

Environmental radicalism, left and right.

Sean Mirski terms the Monroe Doctrine “revolutionary” in his impressively erudite "We May Dominate the World."

How the Plattsburg camps tried (and failed) to raise a volunteer army ahead of World War I.

A minor incident gets distorted in order to provide a desired racial story.

In 1910, a failed House bill sought to increase the availability of low-cost meat by importing hippopotamuses that would be killed to make "lake cow bacon."

Police champions have long wielded new technology as a tool to project authority and legitimacy, while deflecting criticism.

How a celebrated corporate lawyer named Elihu Root became the driving force behind some of the worst U.S. atrocities ever perpetrated abroad.

During the cold war, football’s violence became precisely its point.

Stephen Casper, a medical historian, argues that the danger of C.T.E. used to be widely acknowledged. How did we unlearn what we once knew?

Immigrant housewives and the riots that shook New York City.

A new history of the environmental movement places too much emphasis on famous figures like Rachel Carson and shies away from confronting failures.

One hundred years ago, a strong leader brought House rebels to the table to elect a speaker. Can McCarthy do the same?

The 11-foot-tall elephant reshaped our language, which has proved surprisingly apt.

Despite their minority status, the Socialists had been a significant force in American politics before patriotic war hysteria brought on an era of repression.

A new book explores the final days of Ralph Waldo Emerson - traveling from Concord to California, and beyond.

Theodore Roosevelt said his made him look like “a mewing cat.” Lyndon Johnson called his “the ugliest thing I ever saw.” Ronald Reagan ordered a do-over.

A history of the bureau and its place in the federal government.

Why Barnum Brown could not stop collecting.

These communities rely almost entirely on tourism for their existence—yet too much tourism, not to mention climate change, can destroy them.

In 1897, the 25th Infantry Regiment Bicycle Corps embarked on a 1,900-mile journey from Montana to Missouri.