Investigations Read the latest from NPR's investigative team. If you have solid tips or documents on stories we should probe, please send them to us.

Investigations

Saturday

President Trump and Ukrainian President Volodymyr Zelenskiy speak during a meeting in New York on Wednesday, on the sidelines of the U.N. General Assembly in New York City. Saul Loeb/AFP/Getty Images hide caption

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Saul Loeb/AFP/Getty Images

Opinion: The Sitcom President And The Reality Show President

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Thursday

A grounded Boeing 737 Max sits in a parking area adjacent to Boeing Field in Seattle. Federal safety officials said on Thursday that Boeing should consider how cockpit confusion can slow the response time of pilots. Elaine Thompson/AP hide caption

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Elaine Thompson/AP

Neil stands in a room with military cyber operators from Joint Task Force ARES to launch an operation that would become one of the largest and longest offensive cyber operations in U.S. military history. Josh Kramer for NPR hide caption

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Josh Kramer for NPR

How The U.S. Hacked ISIS

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Thursday

Adrian Lamo (center) walks out of a courthouse in Fort Meade, Md., where Chelsea Manning's court-martial was held, on Dec. 20, 2011. Patrick Semansky/AP hide caption

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Patrick Semansky/AP

The Mysterious Death Of The Hacker Who Turned In Chelsea Manning

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Wednesday

Whistleblower Cites 'Waste Of Funds' At Guantánamo Court And Prison

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An NPR investigation finds that the military court and prison at Guantánamo Bay, Cuba, have cost taxpayers billions of dollars, with billions more expected. The war court headquarters at Camp Justice, as seen through a broken window at an obsolete air hangar at the U.S. Navy base at Guantánamo Bay, Cuba, on February 28, 2015. Emily Michot//Miami Herald/Tribune News Service via Getty Images hide caption

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Emily Michot//Miami Herald/Tribune News Service via Getty Images

Guantánamo Has Cost Billions; Whistleblower Alleges 'Gross' Waste

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Wednesday

Jeanetta Churchill stands outside of her Baltimore row house. She says she has to keep her air running constantly in the summer in order to manage her bipolar disorder. Nora Eckert/NPR hide caption

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Nora Eckert/NPR

How High Heat Can Impact Mental Health

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A tree grows beneath a power line in the Park DuValle neighborhood of Louisville, Ky. Urban environments can be especially harsh on trees. Sean McMinn/NPR hide caption

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Sean McMinn/NPR

Trees Are Key To Fighting Urban Heat — But Cities Keep Losing Them

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Tuesday

Sean McMinn/NPR

As Rising Heat Bakes U.S. Cities, The Poor Often Feel It Most

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Tuesday

A luthier assembles the rosewood sides of a guitar at C.F. Martin & Co. in Nazareth, Pa. Instrument-makers and musicians will likely be able to transport instruments containing rosewood around the world without a burdensome permit process. Jacqueline Larma/AP hide caption

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Jacqueline Larma/AP

Thursday

Authorities in Southern California seized a stockpile of high-powered firearms, ammunition and tactical gear from the property of Rodolfo Montoya, who authorities say had been planning a mass shooting because of a dispute involving his work's human resources department. Long Beach Police Department hide caption

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Long Beach Police Department

A guard sits in his truck at the entrance to the Darby Coal Mine in Holmes Mill, Kentucky, on May 20, 2006 - the day an explosion in the mine killed five miners. The owners of the mine later failed to pay nearly $3 million in penalties for mine safety violations at Darby and other mines. Wade Payne/AP hide caption

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Wade Payne/AP

Wednesday

Rep. Al Green speaks during a news conference in May as activists urge Congress to begin impeachment proceedings against President Trump. Saul Loeb/AFP/Getty Images hide caption

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Saul Loeb/AFP/Getty Images

Buoyed By Fresh Support, Rep. Al Green Plans New Call To Impeach Trump

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Wednesday

Antonio Basco cries beside a memorial near the scene of the recent mass shooting in El Paso, Texas. Basco, whose 63-year-old wife was among the victims, says he has no other family and welcomes anyone wanting to attend her funeral service. John Locher/AP hide caption

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John Locher/AP

Monday