Johns Hopkins students create high-heeled prosthetic

Mark Cuban

Time for Trump to put up or shut up

Time for Trump to put up or shut up

Donald Trump should put his money where his mouth is.

The real estate mogul says he's worth "in excess" of $10 billion. I think he's lying, as does pretty much every expert and financial journalist who has looked into the question. Forbes has put his net worth at $4.5 billion. Bloomberg says it's below $3 billion. Billionaire Mark Cuban has cast doubt on whether Mr. Trump is even a billionaire at all.

I've read the analyses, but common sense always told me he was full of it. Actual multi-billionaires tend not to waste their time recording videos hawking steaks in the Sharper Image catalog. They don't bother with snake oil schemes peddling dietary supplements. They...