Sacha Pfeiffer

The United Nations warns that the conflict in Sudan has caused one of the world's largest human disp...

It was 22 years ago this week that the U.S. opened a military prison in Guantánamo Bay, Cuba, to hol...

Why would a police officer refuse to testify in murder cases he investigated — especially if he beli...

He says he's ridden every mile on the Amtrak rail network, and has never grown tired of looking at t...

The United States government is creating a new agency to focus on global health and pandemic prevent...

Former President Donald Trump has been summoned to appear in federal court on Thursday for his arrai...

The pandemic was a chance for the Centers for Disease Control and Prevention to do what it does best...

When Michael J. Fox describes his experience with Parkinson's disease in his new documentary, Still:...

Pathologist Dr. Benjamin Mazer talks about the changing FDA rules on donating blood for men who have...

Jonathan Collins, a professor of political science, public policy and education at Brown University,...

In a major reversal, a former top Bush administration official who once supported the government's d...

A year ago, there had seemed to be a breakthrough in the biggest unresolved terrorism case in the Un...

A Saudi Arabian man held at Guantánamo Bay, Cuba, for more than two decades without being put on tri...

Editor's note: This story includes graphic descriptions of torture techniques. A 42-year-old Pakista...