NPR's Tamara Keith and Amy Walter of the Cook Political Report with Amy Walter join Amna Nawaz to discuss the latest political news, including President Trump's popularity going into the midterms as some Republicans start to distance themselves, the Michigan Senate race and Democrats still debating their November message.

NASA launched its newest space telescope, undertaking its biggest mission yet to study the universe on a much larger scale. A roughly $4 billion project, the Nancy Grace Roman Space Telescope will allow scientists to get panoramic views of space and better understand the nature of powerful forces known as dark energy and dark matter. Miles O'Brien joined Amna Nawaz to discuss more.

For perspective on the latest developments in the war with Iran, Amna Nawaz spoke with retired U.S. Navy Rear Adm. Mark Montgomery and Michelle Wiese Bockmann, an analyst at Windward, a London-based maritime intelligence company.

Federal Reserve Chair Kevin Warsh said there is still work to do on inflation. At the Fed's annual economic symposium in Jackson Hole, Wyoming, Warsh also said that although he is not committed to a rate hike, he is not ruling it out. Amna Nawaz discussed more with Nick Timiraos of The Wall Street Journal.

Americans continue to flock to the national parks, with more than 320 million visitors in the last year alone. But that broad appeal is facing new political pressures, from orders to revise exhibits to President Trump's construction projects. Amna Nawaz discussed the state of national parks with Tiernan Sittenfeld, the president and CEO of the National Parks Conservation Association.

Craig Fugate led the Federal Emergency Management Agency during the Obama administration through record-breaking disaster years. On our PBS News podcast, "Settle In," Amna Nawaz spoke with Fugate about how climate change has upended disaster response, and about criticism that the agency has been politicized in recent years.

Jurors are deliberating in the murder trial of Lindsay Clancy, a case that has raised questions about maternal mental healthcare. Clancy does not deny killing her children, but she pleaded not guilty, arguing she can't be held criminally responsible because the murders occurred while she was suffering from postpartum psychosis. Amna Nawaz discussed more with Camilo Fonseca of The Boston Globe.

Tributes continued to pour in for Dolly Parton a day after her death. Singer-songwriter Martina McBride, named female vocalist of the year four times by the Country Music Association and three times by the Academy of Country Music, joined Amna Nawaz to discuss her friend and fellow icon.

This week, a Texas court heard arguments in a legal fight between a California couple and their surrogate over a newborn with a serious heart condition. The case has drawn the attention of anti-abortion activists pushing for new restrictions on surrogacy. Amna Nawaz discussed the case with Shefali Luthra, reproductive health reporter for The 19th News.

At least one in four NFL players has CTE when they die, according to a new study that examined the brains of former pro players. CTE is a brain disease thought to be caused by years of sustained head trauma and can only be diagnosed after an autopsy of the brain. Amna Nawaz spoke with Dr. Chris Nowinski of the Concussion and CTE Foundation, and a co-author of this study.

The world is mourning the passing of the queen of country, Dolly Parton. Her enormous legacy spans not only music, but the world of movies and entertainment, health care, philanthropy and education. Amna Nawaz takes a look at Parton's extraordinary life.