Walmart and Mexican Farm Conditions, SNL at 40, and a One-Way Ticket to Mars

Two months ago, the Los Angeles Times documented in appalling detail the living conditions at Mexican megafarms that produce half our tomatoes, cucumbers, and bell peppers. Now, Mexican growers and distributors and Walmart have teamed up to improve the situation. But how? In other farming news, we take a look at how Harvard University became one of California's most unlikely wine producers, and what it says about the state's agriculture industry. In our weekly television roundup, a look at "Saturday Night Live's" 40-year anniversary special. Then we kick off a week of interviews with the filmmakers behind this year's Oscar-nominated documentaries with a co-director of "Salt of the Earth." And finally, a look at a competition for a one-way ticket to Mars. Great adventure, or death wish?