Investigators say a dispute between Petrov and another math professor was the motive."Professor charged with peeing on colleague's door"
?The Los Angeles Times says Petrov was captured on videotape urinating on the door of another professor's office on the San Fernando Valley campus. School officials had rigged the camera after discovering puddles of what they thought was urine at the professor's door.
David Pescovitz is Boing Boing's co-editor/managing partner. He's also a research director at Institute for the Future. On Instagram, he's @pesco.