Methane Gas Exhaust Pipe

The Not-So-Clean Side of Natural Gas

Methane leaks are a serious but oft-overlooked cause of pollution.
Daniel Boone escorting settlers through the Cumberland Gap, by George Caleb Bingham (1811–1879)

Who Was Daniel Boone?

Who was the man who became an American icon? Daniel Boone was a frontiersman, pioneer, political figure, ally of Native Americans, and more. 
Mussolini and the Quadrumviri during the March on Rome in 1922: from left to right: Michele Bianchi, Emilio De Bono, Italo Balbo and Cesare Maria De Vecchi

Authoritarianism’s Hidden Root Cause

The greater the inequality of a society, the greater the risk of authoritarianism.
Amy Carter and Jimmy Carter participate in a speed reading course at the White House, February 22, 1977.

Speed Reading and Comprehension

Does "speed reading" always decrease comprehension? 
Artificial intelligence robot.

When the AI Promotes Genocide

It seemed like a good idea; Microsoft introduced an Artificial Intelligence (AI), Tay, to comment on social media ...
Tax frustrations

A Brief History of the Income Tax

The significance of the date April 15 is not lost on anyone in the modern United States. But ...
Leonardo da Vinci botanical study, circa 1490

Leonardo Da Vinci, Artist/Scientist

Leonardo was the first scientific illustrator.
red peony

Seven Favorite Flower Poems

Our editors pick flower poems from Poetry magazine, American Poetry Review, and the Kenyon Review.
University of Pennsylvania students locate books on the stacks at the new Charles Patterson Van Pelt Library in 1962. (Photo by Authenticated News/Archive Photos)

Do Libraries Still Matter?

With the rise of digital search tools, is there a future for big buildings filled with books and journals? Respondents to an Ithaka S + R survey say yes.
Elk in Yellowstone National Park

National Parks Are Like Islands for Wildlife

There’s no doubt that national parks are good at getting people in touch with the natural world. But how good are they at conserving wildlife?