In our news wrap Tuesday, Taliban suicide bombers killed at least 48 people and wounded scores more in two separate attacks in Afghanistan, one of which targeted President Ashraf Ghani’s election rally. The second deadly blast occurred near the U.S. embassy in Kabul. Also, Iran’s Ayatollah Ali Khamenei rejected the idea of talks between Iranian President Hassan Rouhani and President Trump.

Traditionally, movies and books about Native American life have focused on tragedy and defeat. Now, a new work of history and reporting urges readers to consider a more complex culture that is not only still living, but evolving. Jeffrey Brown sits down with David Treuer, author of “The Heartbeat of Wounded Knee.”

In eastern Ukraine, war with Russian-backed separatists has raged on and off for five years, forcing a generation of children to endure prolonged trauma and the premature loss of innocence. The film “The Distant Barking of Dogs” chronicles the story of 10-year-old Oleg and his grandmother, Aleksandra, who experience painful transformation along the conflict’s frontlines. Nick Schifrin reports.

With a presence in 65 countries, ride-sharing company Uber has conducted about 10 billion trips in its lifetime — about 15 million per day. Paul Solman looks at how economists are using this treasure trove of data.

Baltimore has acquired a reputation for corruption, illustrated recently by Mayor Catherine Pugh, who resigned over allegations she had inappropriately taken payment in exchange for political favors. But the more ominous threats confronting the city, such as rampant crime and poverty, persist. Amna Nawaz talks to ProPublica’s Alec MacGillis about what could be a “fresh start” for Baltimore.

Writer and producer Frank Rich has led a long and varied career in the arts, from serving as theater critic for The New York Times to his current role as executive producer for the hit HBO show “Veep,” now in its final season. Rich talks about his experience in the political circles of D.C., using drama as an escape and his brief but spectacular take on a life in theater.

In our Thursday news wrap, conservative commentator Stephen Moore withdrew as a potential nominee to the Federal Reserve Board after losing support from Senate Republicans over past writings disparaging women. Meanwhile, Venezuelan President Nicolas Maduro declared that he retains the military’s loyalty after commanders ignored opposition calls to revolt this week.

As the U.S. continues to grapple with issues of sexual assault and harassment, the Department of Defense released a report Thursday detailing the extent of the problem within its ranks. The data indicates a rise in the reported number of sexual assaults in the military, with only about a third of victims filing an official report. William Brangham talks to veteran and Sen. Tammy Duckworth, D-Ill.

After Attorney General William Barr failed to appear before the House Judiciary Committee for a scheduled hearing on the Mueller report, House Democrats threatened to hold him in contempt. Meanwhile, Republicans argue Mueller’s investigation was biased against President Trump. Amna Nawaz talks to former Justice Department official David Rivkin and Neal Katyal, former acting solicitor general.

The Trump administration wants NASA to get back to the moon by 2024, using any means necessary. But will the money and the commitment be there to support the effort? Science correspondent Miles O’Brien talks to NASA Administrator Jim Bridenstine about technical and political risk, international competition and his broader vision for the agency.

Freshman GOP Congressman Denver Riggleman is now four months into his new job. Between the government shutdown and hearings over the Mueller report, he’s learning to balance life on the Hill with the needs of his Virginia constituents. Lisa Desjardins caught up with Riggleman at home in Nelson County over the recess to talk about satisfying voters, attracting donors and navigating party lines.

Fewer than 40 percent of fourth and eighth grade students nationwide are proficient readers. Now, led by parents of children with dyslexia, a learning disability that makes reading and spelling difficult, some states are trying to change how reading is taught. Special correspondent Lisa Stark reports from Arkansas, where a group of determined advocates have upended traditional reading instruction.

Rep. Doug Collins of Georgia is ranking Republican on the House Judiciary Committee, which planned to question Attorney General William Barr on Thursday. Judy Woodruff talks to Collins about Barr’s late-breaking decision not to attend the hearing, why Collins believes that Democrats are engaging in a partisan “stunt” over the Mueller report and what questions he would ask of the attorney general.

Attorney General William Barr testified before the Senate Judiciary Committee Wednesday to explain his handling of the Mueller report. While Barr defended his actions, Democrats zeroed in on a newly discovered letter from Mueller criticizing Barr’s summary of the report’s “principal conclusions.” Meanwhile, Barr said he would not attend a planned House hearing Thursday. Judy Woodruff reports.

Few scenarios are harder to witness than the suffering of a seriously ill child. For kids with life-threatening diseases, survival often requires procedures that are painful and scary. But a Washington nonprofit is encouraging kids to be active in their own care by rewarding them for enduring their treatment. Paul Solman reports on Hope for Henry’s “Super Path to Super Duper Better” program.

The frozen continent of Antarctica contains the vast majority of all freshwater on Earth. Now that ice is melting at an accelerating rate, in part because of climate change. What does this transformation mean for coastal communities across the globe? William Brangham reports from Antarctica on the troubling trend of ice loss and how glaciers can serve as a climate record from the past.

Antarctica was the last of the seven continents to be discovered, and it wasn’t until the late 1950s that commercial tourism began there. But now, Antarctica has become a popular travel destination, amid growing concerns about the effect that increasing numbers of people could have on its pristine environment. William Brangham reports from Antarctica.

For three nights in February, the Art Institute of Chicago in partnership with Pitchfork opened its doors for “Midwinter.” The event is billed as an “unprecedented art and music experience,” with more than 30 eclectic acts performing inside the museum. NewsHour Weekend’s Christopher Booker has the story.

In Colombia, an estimated 83,000 people have been forcibly disappeared since 1958. But peace accords between the government and the FARC, the country’s largest guerrilla group, in 2016 mandated that finding the missing was a necessary step toward reconciliation. Special correspondent Nadja Drost reports from Colombia on how loved ones suffering a “never-ending grief” are searching for closure.

The political power struggle in Venezuela took a violent turn Tuesday, as opposition leader Juan Guaido appealed to the military to turn against President Nicolas Maduro’s regime, and for the public to take to the streets. Thousands turned out in support, but it was unclear whether the armed forces are indeed ready to shift allegiance. William Brangham reports on a volatile day in Venezuela.

After Tuesday’s violent clashes, Wednesday dawned quiet in Caracas but eventually grew chaotic again. Police threw tear gas at Venezuelans demonstrating in support of opposition leader Juan Guaido. Meanwhile, it was unclear why Guaido’s earlier talks with military leaders about joining his campaign to unseat President Nicolas Maduro appeared to have fallen through. William Brangham reports.

In our Wednesday news wrap, police in Charlotte, North Carolina, are trying to determine a motive in Tuesday’s college campus shooting. A former student allegedly opened fire in a classroom at the University of North Carolina at Charlotte, killing two and wounding four. Meanwhile, Florida’s Republican-led state house gave final approval to expanding a program that allows teachers to carry guns.

When reports emerged Tuesday that special counsel Robert Mueller had sent Attorney General William Barr a letter expressing concern over Barr’s characterization of the Mueller report’s conclusions, several Democrats called for Barr to resign. Among them was California Rep. Ted Lieu, who joins Judy Woodruff to discuss that and his reaction to Barr’s decision not to attend a House hearing Thursday.

It was a contentious day on Capitol Hill as Attorney General William Barr appeared before the Senate Judiciary Committee to discuss his handling of the Mueller report. Yamiche Alcindor and Lisa Desjardins join Judy Woodruff to analyze Barr’s testimony, including his explanation of why he determined President Trump hadn’t committed obstruction of justice.