The man who shot and killed 17-year-old Trayvon Martin in an incident that has reignited the national conversation about race relations told police that the younger man knocked him to the ground and slammed his head into the sidewalk, the Orlando Sentinel just reported.

President Obama came to South Korea to talk about global nuclear security with world leaders, but found himself trying to build a unified front against North Korea's planned rocket launch next month.

Obama and South Korean President Lee Myung-bak strenuously warned North Korea not to go ahead with the launch. In a speech Monday at the summit in Seoul, Obama used some of the toughest language he has ever used addressed to the leaders of North Korea.

Over the weekend, members of the New Black Panther Party showed just how tense the situation in the Trayvon Martin shooting has gotten: They offered a $10,000 bounty for the capture of George Zimmerman, who shot and killed the unarmed teenager.

Does a federal law stretching back to 1867 bar the Supreme Court from deciding on the merits of the administration's health law right now?

The court on Monday heard the first arguments in a historic three-day session that could decide the fate of the Obama administration's signature domestic achievement.

The filmmaker James Cameron just completed the first solo dive to the deepest part of the ocean.

As we reported, the Challenger Deep, near Guam, is 6.83 miles underneath the water's surface and had only been visited once before in 1960.

Seventy years ago, 70 percent of U.S.-made cars came with a stick shift. The number is less than 9 percent today.

But at least one man is on a quest to reverse that slide.

Eddie Alterman loves automobiles. He's a gear head. He's the top editor at Car and Driver magazine. His whole career, he has watched the sales of cars with stick shifts decline. And when Ferrari failed to offer a manual option for the new 458 Italia, he said, enough's enough. Basta.

San Francisco's District 5 Supervisor, Christina Olague, has requested a hearing to examine neighborhood recycling scavenging. Since 2010 Recology and the city have looked into how to stop the activity, which costs up to $5 million in revenue annually. The hearing should take place in April before the board’s City Operations and Neighborhood Services Committee...

As the Supreme Court begins hearing arguments on the Affordable Care Act, Tell Me More continues the conversation about state reactions to the law. Guest host Jacki Lyden speaks with Florida Senate President Mike Haridopolos, about opposition to the Affordable Care Act in his state.

Transcript

JACKI LYDEN, HOST:

I'm Jacki Lyden and this is TELL ME MORE from NPR News. Michele Martin is away this week. Coming up, spring hails all sorts of lovely flowers and in Washington it brings cherry blossoms on the trees that ring the city's tidal basin. We'll share the story behind the famed cherry blossoms in a few minutes. But first, the Supreme Court opens a three-day hearing today about the Obama administration's Affordable Care Act.

"Suspicious test scores in roughly 200 school districts resemble those that entangled Atlanta in the biggest cheating scandal in American history," The Atlanta Journal-Constitution reported over the weekend.

It examined data from 50 states and the District of Columbia, covering 69,000 schools in 14,743 districts and found that: