In three decades of advocating for prison abolition, the activist and scholar has helped transform how people think about criminal justice.

“The true impact of activism may not be felt for a generation. That alone is reason to fight.”

The activist who turned off the Keystone pipeline last fall is facing years in prison - and not backing down.

The ragged glory of female activism.

The radical environmental group Earth First! orchestrates a musical in Florida.

How artist Petr Pavlensky uses his body and the Russian legal system as canvases.

In what will likely be his last political act, Willie Nelson declares war on corporate marijuana.

A profile of Malala Yousafzai, the young activist from Pakistan who was just awarded the Nobel Peace Prize.

A woman's involvement in an unstable Detroit activist movement.

"The houses we set out to destroy had already been inscribed by the city. The city had earmarked them as tear-downs during the first stage of a larger urban planning initiative – a large ‘D’ for Demolition had been written in white chalk on the front doors of the dilapidated multi-family structures, veterans of a time when Detroit was still a factory town, a place where the music of Motown fumed larger than the gusts of exhaust unleashed from the chains of cars which tumbled off the assembly lines at the auto factories and straight onto those glistening American freeways. The electric streetcar line along Woodward Avenue had been replaced by gas-powered buses. There’d been the great race wars. Even still, at the time those houses had been erected on that tender Northern riverbed which skirted the Canada border, the word future seemed more a promise than an urgency."

What to do about climate change.

Almost 40 percent of the world’s population lives in countries with limits on abortion. Activists like Rebecca Gompert imagine a future where those limits are meaningless because most abortions happen at home.

Notes from a Black Panther fundraiser on Park Avenue.

On the lesbian separatists of the 1970s, who “created a shadow society devoted to living in an alternate, penisless reality.”

Why three young undocumented activists intentionally got themselves detained.

The story of three peace activists — a drifter, an 82-year-old nun and a house painter — who penetrated the exterior of Y-12 in Tennessee, supposedly one of the most secure nuclear-weapons facilities in the United States.

On dissident filmmakers in Syria.

On the history of Earth Day and the failure of the modern environmental movement.

Shulamith Firestone, one of the first radical feminists, helped to create a new society. But she couldn’t live in it.

The life and work of Aaron Swartz, in context.

On a movement divided.

“What are you doing here?” Loggins asked Janette. Janette thought this an odd question. “It’s Bike to Work Day,” she said. “Did you ride your bike to school?”“Bicycling isn’t allowed at Maple Avenue School,” said Loggins. Janette did a double take. “You’re kidding me,” she said. “Right?”

An undercover cop infiltrates a group of British activists, befriending and then betraying them.

A profile of environmental activist Tim DeChristopher.

On the dying city of Port Arthur, Texas, and one man’s fight to save it.

The anatomy of a bungled, massively expensive undercover sting conducted by the Seattle Police Department.