The Transportation secretary says the effort is about safety, but some rail experts and the wind industry say there's little ...

Transportation Secretary Sean Duffy says he is optimistic a “brand new system” for air-traffic control can be implemented in ...

Transportation Secretary Sean Duffy detailed his spat with Elon Musk over firing air traffic controllers during an appearance ...

Transportation Secretary Sean Duffy opened up about his past dispute with tech mogul Elon Musk over the guru’s push to slash ...

Acting NASA administrator Sean Duffy told Fox News host Jimmy Failla he had not yet been given "the alien briefing," despite ...

Transportation Secretary Sean Duffy on Wednesday said he is not looking to privatize the Federal Aviation Administration (FAA ...

NASA is fast-tracking plans to deploy a nuclear reactor on the lunar surface by 2030 as a strategic imperative to prevent ...

U.S. Transportation Secretary and acting NASA Administrator Sean Duffy joined President Donald J. Trump in signing of the Executive Order.

President Donald Trump ’s NASA chief Sean Duffy has expedited the timeline to build a nuclear reactor on the moon, according to a directive obtained by The Independent. The space agency has already ...

This is the first major agency effort by the interim NASA administrator, who is also the Transportation secretary and a ...

Overhaul of nation's air traffic control system has started with training of controllers, Transportation Secretary Sean Duffy ...

Sean Duffy, acting administrator of NASA, speaks with CBS News' Mark Strassmann about the new space race with China.