Marburg virus is hard to detect early on--and goes on to kill about half its victims. Researchers hope to work quickly during this outbreak to make progress on emerging vaccines and treatments.
Haley is a woman of color who led South Carolina in taking down the Confederate flag from its state capitol. That makes campaigning complex in the party of Trump.
Secretary of State Antony Blinken called off his trip to China after the discovery of a Chinese "surveillance" balloon over the U.S. It's the latest setback in an increasingly fraught relationship.
Republican Party divisions over who would lead the House, debates over the debt ceiling and other conflicts have revived a years-long conversation about what it even means to be conservative.
The Ukrainian government's recent shake-up drew attention to corruption allegations implicating senior officials. Here's a short history of the country's efforts to combat graft.
We have been here before. But this time the House's new Republican majority is largely driven by a faction that says it will hold the debt limit vote as a hostage to win policy changes.
From an obscure congressional maneuver to a trillion-dollar coin, there are many ideas out there to help the U.S. avoid debt default, but they are untested and have major potential problems.
The similarities are deep: In addition to aiming to subvert an election, some of the same U.S. voices that amplify former President Donald Trump are echoing Brazil's former president, Jair Bolsonaro.
Georgia and New Hampshire have asked for extensions to try and meet the Democratic Party's requirements to move into the early voting window, but it's not clear how they can overcome the hurdles.
