Since the inauguration, billionaires who funded climate action over the last decade have avoided criticizing Trump’s climate ...

Bill Gates criticized Elon Musk and Jeff Bezos for focusing on space exploration instead of pressing global issues like ...

Here's a list of the top ten richest people in the world, nine of which are American billionaires. See Elon Musk's net worth.

The journalist Kara Swisher discusses Elon Musk's goals in government — and the factors that have led to his radicalization.