Mid-day Update

This week, we're looking at how new technology is changing the American workforce. The series is called "Robots Ate My Job," and David Brancaccio of our Economy 4.0 unit is driving across the country without interacting with a single human being. Today, a look at self-checkout at grocery stores. A couple of congressional panels will look at the military's push into alternative energy. And day two of the Supreme Court arguments surrounding the new health care law begins.

The father of what we know as the mass-produced skateboard passed away at age 81. How has the industry grown since he first began to churn out boards?

It's day one of Supreme Court arguments over President Barack Obama's health care reform law. Twenty-six states are challenging the law -- parts of which are already in place. Apollo Group, which owns the University of Phoenix, is expected to announce earnings today, and analysts aren't expecting big things. It's been 10 years since the University of Pennsylvania's Wharton School opened a satellite campus in San Francisco. To mark the occasion, the business school has moved to a bigger -- and shinier -- facility.

Lionsgate had a very good weekend It's film, 'The Hunger Games,' took in $150 million dollars domestically over the weekend.

Private investors are buying up foreclosed properties by the bushel and renting them out at a profit. Speaking of bushels, the warm weather is tempting some farmers to start planting -- but if you plant too early, you won’t get federal crop insurance if something goes wrong. And tax day is just three weeks away. Why is it that so many people want tax reform, but that it just hasn't happened yet?

The president will be talking energy today in Cushing, Okla. -- the starting point for the southern part of the Keystone XL Pipeline. But come Monday, the president will have another issue to worry about: the future of his health care law. Yesterday, Marketplace's Kai Ryssdal sat down with President Obama in Nevada and asked him about it. The president also outlined what he sees as the "recipe for success" for the American economy. One California chain, Umami Burger, is getting ready to test the market for the $15 patty -- with all the fixings -- nationwide. And we check in with Frank Newport for our weekly Attitude Check.

The morning after yet another primary Tuesday, we take a deeper look at the economic policies of Mitt Romney. Is cane sugar really better for you than corn syrup? And as gas prices keep going up, the White House could grant a waiver of what's known as the "Jones Act," which currently forbids foreign cargo ships from moving their goods from one American port to another.

New numbers out today show that the soda sales slump that has been going on for years continued to speed up in 2011, with consumers buying more healthy beverages in its place.