President Donald Trump is speaking with Russian counterpart Vladimir Putin on Tuesday, as the US pushes for a temporary ceasefire agreement in the Ukraine war. Follow for live news updates.

President Donald Trump and Russian President Vladimir Putin agreed during a lengthy call Tuesday to an immediate pause in ...

The U.S. Army Corps of Engineers has uncharacteristically been working with nature instead of bulldozing it into submission. Will this enlightened approach prevail?

The final results from the Atacama Cosmology Telescope offer the sharpest, most sensitive view of the early cosmos that ...

The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR 8799, a multiplanet system 130 light-years away that has long been a ...

New photograph captures breathtaking sight of history-making Boom Supersonic's XB-1 passenger plane as it hits supersonic ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.

New research by the Atacama Cosmology Telescope, or ACT, collaboration has produced the clearest images yet of the universe’s ...

New research by the Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe’s ...