For the last decade Harvard astronomer Avi Loeb has been scanning the skies and seas for evidence of intelligent alien life.

It comes after the US president directed his administration to declassify more information on the issue ...

The orbital surgery on the International Space Station returned the Canadian-built robot arm to full health after its "wrist" ...

In the earliest stages of life, mammalian embryos start as a disorganized cluster of cells. As development progresses, these cells become organized into well-defined shapes and structures. This ...