Marlon Riggs, left, and Essex Hemphill in Tongues Untied.

Filmmaker Marlon Riggs: “Notice Is Served”

The award-winning Black gay filmmaker, author, and activist Marlon Riggs left a legacy of protest against racism and homophobia.
ZIP code promotional sign with "Mr. ZIP" on a hotel letter drop.

Where Did Zip Codes Come From?

How a plan for getting the mail delivered faster allowed targeted marketing to grow.
Protesters march with three placards stating "BLACK Lives Matter" in the aftermath of widespread unrest following the death of George Floyd on June 1, 2020 in Philadelphia, Pennsylvania.

Healing, Spirituality, and Black Lives Matter

Spirituality has long infused and inspired social justice movements. Activists today expand that heritage.
Demonstration of Protest and Mourning for Triangle Shirtwaist Factory Fire of March 25, 1911, 04/05/1911

The History of Mourning in Public

After a massive factory fire in 1911, hundreds of thousands of people took to the streets to stage a "symbolic funeral."
ear gas is fired at protesters demonstrating against the death of George Floyd outside the 3rd Precinct Police Precinct on May 26, 2020 in Minneapolis, MN.

Why Do Police Use Tear Gas When It Was Banned in War?

The development of chemical warfare around the time of World War I led to the use of tear gas as a weapon by civilian police forces.
Members of the United Kingdom branch of the Gay Liberation Front carry placards during a street protest along Essex Street in London on 12th February 1971.

From Gay Liberation to Marriage Equality

One scholar explains how the LGBT movement became focused on advancing the rights of a narrow set of people at the expense of its once-radical vision.
Three police offers in their precinct office

Is Hiring More Black Officers the Key to Reducing Police Violence?

Diversity among officers lags behind the general population. But is police culture a greater problem when it comes to combating excessive force?
Audre Lorde

Barbara Christian on Audre Lorde

Audre Lorde's influence on contemporary intersectional feminism was profound, as pioneering Black literary scholar Barbara Christian wrote.
A massive American Elm tree sits backlit by the rising sun in Overlook Park in northern Portland, Oregon.

Why Learning the Names of Trees Is Good for You

Getting to know trees can lead to new ways of looking at the world.
Roman Street Scene by Ettore Forti

Everyone in Pompeii Got Takeout, Too

Archaeologists have found that snack bars called tabernae fed much of the city in the shadow of Mount Vesuvius.