MADISON, Wis. (AP) — Wisconsin could go down as billionaire Elon Musk’s last big spend on a political campaign. And it was a flop.

Passengers on Southwest Airlines flights will soon be required to keep their portable chargers in plain sight while using them because of concerns about the growing number of lithium-ion battery fires ...

Billionaire Elon Musk said he would cut back on his involvement in political races as he commits to his role at the head of ...