Moody's downgraded the United States' credit rating on Friday, cutting it from the top Aaa level to Aa1 due to rising ...

Orthopedic residents at the University of Maryland have developed a smartphone-based program that helps patients during and ...

Scientists in Philadelphia have, for the first time, created a life-saving solution for a 9-month-old baby—one that could now ...

La adhesión de Colombia al proyecto chino desata una firme advertencia del gobierno estadounidense, que promete bloquear ...