SAN FRANCISCO -- Tesla CEO Elon Musk and his partner Claire Boucher, stage name Grimes, are now parents to a new baby boy. Musk made the announcement on Twitter, sharing two photos of the newborn.

Elon Musk's father, Errol Musk, has made a controversial claim about his son's ex-girlfriend, Claire Boucher, known as Grimes, stating that she wanted to tattoo one of their children's heads when he ...