NPR News

One of the guests in the congressional gallery at last week's State of the Union address was Roxana Delgado, an advocate for soldiers returning home with traumatic brain injuries. Her husband, an army sergeant who NPR profiled in June, 2010, had been dramatically affected by the concussion he received from a roadside blast in Iraq.

Many investors are expecting Facebook to file papers for an initial public offering sometime later this week. The company, which was founded in a Harvard dorm room less than a decade ago, is expected to be valued at nearly $100 billion by Wall Street.

And if these early reports are true this is shaping up to be the biggest Internet IPO ever.

Republican presidential hopeful Newt Gingrich is changing another of his positions in an effort to woo socially conservative voters.

Over the weekend he told churchgoers in Florida that as president he'd work to ban research using stem cells derived from human embryos.

Gingrich has long been a strong backer of federal funding for scientific research. In 2001 his support extended to research on stem cells derived from human embryos left over from in vitro fertilization efforts.

But apparently that's no longer the case.

Guatemala's former dictator — 85-year-old Efrain Rios Montt — is under house arrest, awaiting trial for genocide and crimes against humanity. During his 17-month rule from 1982 to 1983, the Guatemalan military carried out a scorched earth campaign in the Mayan highlands, in an effort to snuff out an insurrection by left-leaning guerilla fighters. Prosecutors are now looking to hold him accountable for the deaths of at least 1,771 men, women and children. For years Rios Montt was sheltered from prosecution because of legislative immunity, which expired earlier this month.