Live updates: Trump threatens tariffs over Greenland effort; Nobel Institute reacts after Machado gives away prize

MACHADO MEETING: Trump met with Venezuelan opposition leader María Corina Machado, who presented him with the Nobel Peace ...

Elon Musk says Warren Buffett's way of getting rich is 'pretty boring.' Here's what you can learn from the Oracle of Omaha

He has challenged Mark Zuckerberg to a cage fight, lashed out at Mark Cuban, and mocked Bill Gates’ appearance. So of course ...