During my time in the White House, I was there for many Biden speeches. I helped the president prepare for them. And I can tell you, this was not a traditional Biden speech. A more traditional ...

But after a couple of years of work, xMEMS has arrived at the next generation — ultrasound through a solid-state speaker. This tiny, 1mm-thin speaker is called Cypress, and after listening to it ...

A NASA satellite has spotted frozen "kidney beans" on Mars' sand dunes trapped in place until springtime. Photographing them can help us determine if there was ever enough water on Mars to sustain ...

Free Expression: As Donald Trump’s domestic critics get in line, so the world has saluted his restoration, if reluctantly. Photo: Brandon Bell/Pool via Reuters As Donald Trump prepares his ...

Across the country, educators described widespread anxiety about President-elect Donald J. Trump’s promises to deport immigrants and what it could mean for their students. By Dana Goldstein If ...