NASA — and astronauts — now have one more thing to worry about before sending humans to Mars.

 After giving away $28 billion, Bill Gates is no longer the third-richest man in the world. He's the second-richest.

 But you, O Daniel, shut up the words, and seal the book, even to the time of the end: many shall run to and fro, and knowledge shall be increased. Daniel 12:4

Wealthy young minimalist

Research by neuro-physiologists shows that our emotions affect our awareness of the passing of time

Welcome to a complicated new world of smart, well-funded entrepreneurs doing what smart capitalists have always done: ferreting out an underserved market and serving it. But the market these startups have chosen stands out because of how starkly it contrasts with the privileged techie class seeking to profit off it: an industry awash in money deliberately targeting people who decidedly aren’t.

As a skier, I've often wondered how fast I'm skiing when I'm skiing really fast.