Now Playing: 2-18-13 Marketplace Morning Report

This month US Airways merged with American Airlines, then Warren Buffet bought Heinz -- some experts are calling it the return of the mega deal, but do these big deals make companies stronger? A vote in the European Parliament tomorrow on whether Europe should temporarily stop issuing carbon permits could threaten one of the key measures designed to tackle climate change. And if you are not happy with your career, it could be time to take a look at who your friends are.