Nelson Mandela with his right fist raised

Nelson Mandela’s Release

February 11th marks a quarter century since the release of Nelson Mandela (1918-2013)
A pocket of rust colored snow in a crater

The Surprising Colors of Snow

In mountain and other wilderness areas where deep snows last well into the spring, the snow may be tinted red, green, orange, or yellow.
Social Security cards and a sheet of budget numbers

Social Security at 75

The Social Security Act was signed into law in 1935.
Byzantine illustration from the 9th century; a robed figure is destroying an icon.

A Short Guide to Iconoclasm in Early History

In the 8th century, the Eastern or Orthodox branch of Christianity gave history the word iconoclasm, from the Greek words for "icon smashing."
Older covered circuit board

AT&T: Birth of the First Social Network

The first transcontinental telephone call was put through on January 25, 1915.
Blue and red flashing police lights

The Roots of Modern Police Work

The beginnings of modern police work have roots in the colonial experience in Ireland.
The word "news" in old typeface on aged paper

Privacy, Journalism, and the Gilded Age

The interview is now such a standard part of journalism that it may come as a surprise to read that the New York Times editorialized against it in 1874.

Orson Welles at 100

2015 marks the 100th anniversary of the birth of Orson Welles.
Twelfth century illustration of Byzantines using fire against Thomas the Slav

Ancient Chemical Warfare

The lethal combination of chemistry and warfare has a long history.
The back of a taxi in a busy street

Taxis, Ride-sharing Apps, and Safety: An Age-Old Debate

Current controversies over ride-sharing apps like Uber and Lyft may not be all that new.