Debates over development in the world’s largest rainforest have led to deadly conflicts, threats to its indigenous people and harm to the global atmosphere.

Catastrophic accidents at power plants have heightened fears about the safety of nuclear energy, but environmentalists and others are giving it renewed attention as a way to fight global warming.

A disastrous oil spill off the coast of Alaska and massive explosion of a rig in the Gulf of Mexico revealed a pattern of unsettled standards and inconsistent oversight that cast doubt on the oil industry’s preparedness for future accidents.

Some cities are trying to help poor children succeed by having their families move to middle-income, so-called “opportunity areas” – an idea that was once politically impossible.

The Watergate campaign finance scandals led to a landmark law designed to limit the influence of money in politics. Decades later, some say the scandal isn’t what’s illegal, it’s what’s legal.

The defeat of Robert Bork’s nomination to the Supreme Court in 1987 changed the way justices are confirmed today.

Efforts to clamp down on White House leaks to the press follow a pattern that was set during the Nixon era after the publication of the Pentagon Papers.

Today’s immigration policies echo an anti-immigration movement from the 1990s in California.

Both parties play the redistricting game, redrawing electoral boundaries to lock down power.

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The 1918 flu pandemic helped to usher in the Hollywood studio system. Could Covid-19 transform the industry?

Activists concerned about pandemic-related homelessness are seeking rent relief. In the 1930s, tenants banded together against evictions.

The ‘Burning Bed’ killing put domestic violence in the headlines.

Scientists warn that to slow climate change, we need to change how we farm and what we eat.

Plant-based meats may be high tech, but the ideas behind them have been around for decades.

About half a million children have dangerously high lead levels in their blood, mostly from exposure to peeling paint and contaminated dust. The fight over who should clean it up has lasted for decades.

Parenthood through surrogacy has become accepted in the United States, but it’s relatively unregulated compared with other countries – something that can be traced back to case of Baby M.

Perp walk: Unfair maneuver or a strong warning to would-be criminals?

While abortion is often cited as the motivation behind evangelical Christians becoming politically active in the 1970s, there’s another little-known reason that involves the IRS and segregated schools.

White evangelical Christians are among President Trump’s most important supporters. But more than 40 years ago, they were on the margins of American politics.

In the 1980s, the attempted assassination of Ronald Reagan and the shooting of his press secretary, Jim Brady, led to the Brady Bill. Decades later, are there lessons from that fight for the Parkland students?

Thirty million people will suffer from eating disorders in their lifetime, yet decades after Karen Carpenter died from anorexia, myths about eating disorders continue.

Can the lessons we learned from extremist cults decades ago be used to fight ISIS recruitment today?

A small South Dakota farm holds lessons for feeding a crowded and less predictable world.

From naming the problem in the 1970s, to bringing it out of the shadows in the 90s, to a growing accountability today – the evolution of sexual harassment in the workplace.

As the U.S. tightens restrictions on women’s reproductive health, the new season of The Handmaid’s Tale seems more relevant than ever. We look back on a group of women who broke sexual taboos in the 1970s, and how the fight over women’s bodies continues today.

Decades after Dr. Jonas Salk opposed patenting the polio vaccine, the pharmaceutical industry has changed.  What does that mean for the development of innovative drugs and for people whose lives depend on them?