Researchers found a hidden mathematical rule in tree-like art. Branch thickness follows a predictable ratio, making trees recognizable.

Yet only “Gray Tree” has scale-invariant branch diameters. When Mondrian removes the scale invariance in “Blooming Apple Tree ...

(CNN) — President Donald Trump signed an executive order Monday revoking the security clearance of 51 former intelligence officials who signed a 2020 letter arguing that emails from a laptop ...

The order notes these interim clearances aren’t to exceed six months, implying the White House intends for these individuals to go ahead and undergo a background investigation process through ...