In the U.K., voters delivered big losses to the ruling Conservative party yesterday. This weekend, voters in both France and Greece will go to the polls and the expectation is that they'll be in a bit of an anti-austerity mood. Are 401(k)s really the right ticket to a happy retirement? The movie "The Avengers" opens in the U.S. today — but it has already brought in more than $250 million around the world. And tomorrow is the 138th Kentucky Derby. Horse raising is a multi-billion dollar business, and a growing percentage of that money is being spent on cutting-edge veterinary care.

President Obama said last night during his speech in Kabul, Afghanistan that the goal is for Afghan forces to lead combat operations by next year. Here in this country we'll get some indication this morning of how the housing market is doing. Another way to gauge the health of the housing market, of course, is to check one of those websites like Zillow or Trulia. Executives from the online TV site Hulu are in New York today — along with their counterparts from Yahoo, Youtube and AOL — selling their content to advertisers. Elsewhere in New York, the painting known as The Scream goes on auction at Sotheby's.

Exxon Mobil trades off with Apple as the top company in the U.S., but most Americans still know very little about it. A new book out today could change that. Later this morning, we'll find out whether the big auto companies were still selling lots of cars in April. And what do high sales mean for auto workers? Meanwhile, Delta Air Lines is buying an oil refinery in an attempt to cut costs.

This week, two countries at the center of the European debt crisis will hold elections; and in some ways, the eurozone is a lot like a bar. In New York City, One World Trade Center will become the tallest building in the city. And when can spying on workers actually be a good thing?

Billionaire businessman Sir Richard Branson, the chairman of Virgin Group, was in Washington yesterday for a forum hosted by Secretary of State Hillary Clinton on how businesses can help solve the world's problems. But why has he been able to succeed on a platform of "screw business and usual." Samsung reported record quarterly profits today, driven in big part by sales of is smartphones. So should global smartphone leader Apple be worried? And later today, Marketplace's Kai Ryssdal sits down with Treasury Secretary Timothy Geithner to talk recession and recovery.