Scientists who venture into rainforests and bat caves explain how viruses, like Covid-19, spill over from animals to people, and what we must do to stop the next pandemic.

Politics, public health and a pandemic. What we didn’t learn from HIV.

Migrant children in federal custody have tested positive for Covid-19, reopening a legal battle over the rights of children in custody.

Bernie Sanders and Joe Biden are the icons of an ideological split among today’s Democrats, echoing a similar split in the Republican party of 1964.

How can a president continue to govern with an impeachment trial looming? President Clinton and President Trump adopted very different strategies.

Sexual harassment. Discrimination. Workplace inequity. Google’s employees demonstrated against unfair practices. But has anything changed?

When N.F.L. players, starting with Colin Kaepernick, took a knee during the National Anthem to protest they ignited an uproar over injecting politics onto the playing field.

With every new advance in prenatal genetic screening, the ability to prevent suffering has also sparked difficult questions about what should count as “a disease” versus “a difference,” and whether we’re in danger of wiping out certain segments of the population. This story was produced in collaboration with PBS, American Experience.

A look at how the bitter hearings over Judge Robert Bork changed how nominees answer questions.

Both political parties have always played the redistricting game. But some of today’s battles have roots in a civil rights case decided by the Supreme Court 30 years ago.

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.

Some issues are too fundamental for a party to withstand, and the consequences can last for a generation.

Sometimes the most important speech at the convention isn't delivered by the nominee.

In 1831, a radical third party had a new idea for selecting a presidential candidate, and it’s still in use today: the national nominating convention.

Donald Trump's candidacy wasn't the first time the Republican Party was split by an outsider declaring war on the establishment elite.

In 1976, Ronald Reagan found owning the soul of a party isn't the same as taking home its nomination.