Elon Musk is on track to become the world’s first trillionaire, thanks to the soaring value of his companies, Tesla and SpaceX, but the truly astonishing part of the story is the size of that number.

Elon Musk just became the world’s first trillionaire after SpaceX, his rocket and AI company, went public on Friday. It’s a staggering amount of wealth never seen before in the history of human ...

Elon Musk became the world’s first trillionaire on Friday — reaching a wealth milestone never before achieved in human history. But how much money is $1 trillion? The human brain isn’t built to ...