May 1, 2019 - PBS NewsHour full episode

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.

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.

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.

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.

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.

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.

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.

While Facebook remains one of the world's largest companies, it has lost some public trust in recent years, due to the Cambridge Analytica scandal, Russian influence campaigns during the 2016 election and privacy issues. Now, founder and CEO Mark Zuckerberg is embarking upon a major shift to the platform’s basic design and approach. Jeffrey Brown talks to The Washington Post’s Elizabeth Dwoskin.