Voters in nine states, including California, are considering various forms of marijuana legalization. How attitudes toward pot have evolved in the U.S. and whether Election Day could be a turning point for legal marijuana.

The framers of the U.S. Constitution gave us three separate branches of government - executive, legislative and judicial - to keep any one person or group from having too much power. How the U.S. government is supposed to work and why many think it's broken.

Britain's High Court throws a wrench into the government's Brexit plans. The leader of ISIS urges followers to fight to the death in Mosul. And Syrian rebels reject Russia's call for fighters and civilians to leave Aleppo. A panel of journalists joins Diane at the Newseum for analysis of the week's top international news stories.

Polls show the presidential race tightening in the final days of the campaign. President Obama criticizes the FBI's handling of a new investigation into Hillary Clinton's emails. And the Chicago Cubs win the World Series for the first time since 1908. A panel of journalists joins Diane for analysis of the week's top national news stories.

Hearing voices is often associated with mental illness. A British psychologist says this is a misunderstanding. He argues internal voices are actually the building blocks of human thought. An exploration of how, and why, we talk to ourselves.

Compared to the last two presidential elections, early voting results indicate African-Americans aren’t turning out in as high numbers in several battleground states. What’s behind the lower numbers and what they could mean for the outcome of the election.