The billionaire's new job raises tricky First Amendment questions, with implications for public health, says Ari Cohn.

A number of social media users believe Elon Musk's 4-year-old son, X Æ A-Xii, told President Donald Trump, "Shut your mouth." ...

Musk has, without evidence, raised concern about fraudulent government payments and believes blockchain might be a solution.

The ADL said it was not. When Elon Musk gave his own victory speech following Donald Trump’s inauguration, it was something he did — rather than something he said — which ignited the biggest ...