The Atlantic's Katherine Wu discusses what we know -- and what we are still struggling to understand -- about long Covid.

As the war in Ukraine grinds on, a look at the economic battlefield and how the conflict might permanently reshape the global economy. Diane talks to Sebastian Mallaby, senior fellow for international economics at the Council on Foreign Relations.

David Gergen was a White House adviser to four presidents, then founded the Center for Public Leadership at Harvard. In a new book he explains what it takes to become a leader and why fresh leadership is so necessary in this country today.

Title IX turns 50 in June. Diane talks to Elizabeth Sharrow, expert on the history and consequences of the landmark sex discrimination law, about how it transformed women's sports -- and how much there is left to be done to achieve equality on the playing field.

The New Yorker's Robin Wright on Russia's threatened use of nuclear weapons and what it says about the state of global security.

Book bans, outlawed curriculum, and the history of culture wars in America's schools. Diane talks to educational historian Adam Laats.