Duffy's appointment comes during a turbulent period in NASA's history, as the U.S. space agency faces potentially steep budget cuts and has grappled with workforce reductions.

As the caretaker head of NASA, Mr. Duffy would also become the latest Trump official to hold multiple jobs in the administration.

A federal judge in New Hampshire will hear arguments Thursday on whether to certify a class-action lawsuit that would include every baby affected by President Donald Trump’s restrictions on birthrigh...

U.S. President Donald Trump's tariff decisions since he took office on January 20 have shocked financial markets and sent a wave of uncertainty through the global economy. Here is a timeline of the major developments: February 1 - Trump imposes 25% tariffs on Mexican and most Canadian imports and 10% on goods from China,

A study published in the Lancet medical journal projects Trump’s shift will lead to more than 14 million additional deaths globally by 2030, including 4.5 million children.