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Last week, we reported that the U.S Department of Agriculture decided it would give school food administrators alternatives to meat containing lean finely textured beef, also known as LFTB, or "pink slime" by its detractors.

Now, Wal-Mart has become the latest food retailer to announce that it's making changes after listening to customer concerns about LFTB.

There is good news to report on Fabrice Muamba, the soccer player in Britain who went into cardiac arrest during a big game last Saturday in London.

Muamba, a 23-year-old from Congo, collapsed on the field as his team, Bolton, was playing English Premier League rival Tottenham. The Bolton club doctor, Jonathan Tobin, says the stricken player failed to respond to multiple defibrillator shocks, and that 78 minutes elapsed before Muamba's heart started beating on its own again.

With Florida's "stand your ground law" in the spotlight, we want to point to a decision taken yesterday by a Miami-Dade county judge in the case of Greyston Garcia, who was facing second-degree murder charges.

Here's what we know about the case, according to The Miami Herald:

Nearly a month after 17-year-old Trayvon Martin was shot and killed in Florida, the widespread shock and outrage has grown into a nationwide movement calling for justice. This week, the Justice Department announced it would conduct a federal investigation of the incident.

But the Trayvon Martin story has also turned into a dialogue about race in America, a conversation that NPR's Michele Norris has been engaged in for over a year with her Race Card Project.

Like many grade schools, a growing number of universities are turning to standardized tests to measure students' educations. Advocates say they are an important tool to help gauge what students learn. Critics insist no single exam can ever accurately measure the value of four years of college.

A NATO ally with close ties to the West, Turkey's economy has grown significantly, and the government of Prime Minister Recep Tayyip Erdogan has taken active roles in several international crises. But reporter Dexter Filkins paints a complicated picture of Erdogan under threats of coup and paranoia.

"I'm very sorry about Tyler," Dharun Ravi, the former Rutgers student convicted of a crime for spying on his roommate, tells The New Jersey Star-Ledger this morning. "I have parents and a little brother, and I can only try to imagine how they feel. But I want the Clementis to know I had no problem with their son. I didn't hate Tyler and I knew he was okay with me. I wanted to talk to his parents, but I was afraid. I didn't know what to say."

A couple of really rich guys have decided to give even more money to health causes they care about deeply.

New York Mayor, media magnate and public health zealot Michael Bloomberg said he will give $220 million to fight smoking in the developing world. Bloomberg's charitable foundation has targeted tobacco use.

And the latest chunk of money, which is part of a four-year commitment, will bring Bloomberg Philanthropies' support of anti-smoking efforts around the globe to more than $600 million.