Washington Post reporter Damian Paletta on the Trump administration's "politics over science" response to the pandemic and what it cost the country. His new book is “Nightmare Scenario.”

Washington Post reporter Damian Paletta on the Trump administration's "politics over science" response to the pandemic and what it cost the country. His new book is “Nightmare Scenario.”

Washington Post reporter Damian Paletta on the Trump administration's "politics over science" response to the pandemic and what it cost the country. His new book is “Nightmare Scenario.”

Diane talks with Pulitzer Prize-winning journalist Ronan Farrow, about the loss of America's influence around the world. He has just updated his 2018 book "War On Peace."

Diane talks with Pulitzer Prize-winning journalist Ronan Farrow, about the loss of America's influence around the world. He has just updated his 2018 book "War On Peace."

Diane talks with Dr. Carlos del Rio, professor of global health and epidemiology at Emory University's Rollins School of Public Health.

Diane talks with Dr. Carlos del Rio, professor of global health and epidemiology at Emory University's Rollins School of Public Health.

Diane talks with pioneering forest ecologist Suzanne Simard about her new memoir, "Finding the Mother Tree: Discovering the Wisdom of the Forest.”

Political commentator David Rothkopf on Biden's first trip overseas and why he says America's biggest foreign policy challenge is our own polarized politics.

Political commentator David Rothkopf on Biden's first trip overseas and why he says America's biggest foreign policy challenge is our own polarized politics.