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Barbara Kingsolver's new novel starts when millions of monarch butterflies alight on a mountain in eastern Tennessee. Yet, as author Brian Kimberling describes, the beautiful winged visitors in the novel reveal both humankind's effect on nature and the nature of humankind.

But the non-partisan government agency says it's a double-edged sword, because going over the cliff could also set up the economy for a healthy long run.

A study finds combat soldiers who were heavy users of energy drinks were more likely to sleep less than four hours a night. But is the popularity of the drinks contributing to sleeplessness or just a reflection of it?

"What you guys have done means the work that I'm doing is important. I'm really proud of that. I'm really proud of all of you," the president says just before a tear comes down his right cheek. It's a rare public show of emotion from "no-drama Obama."

"Just saw @karlrove in a bar. Aaawwkward," tweets the fake homage to the blogger who nailed the Obama-Romney race tweets. Being hailed as Election Night's second biggest winner continues to bring attention to the FiveThirtyEight.com guru.

Carter flew 77 missions over Europe during World War II. He was among the 33 men who were the first African-American fighter pilots in U.S. history.

The experiment lays the foundation for an electronic infrastructure that would allow us to communicate through the vast distances of space.

RIP Ted Curson, a new jazz singer, the Jazz Composers Collective's modern history, Hurricane Sandy and downtown New York and Miles Davis in 1985. Plus: a Branford Marsalis interview, Arbors Records' Mat Domber, and what the Pittsburgh Steelers radio announcer does in his spare time.

Iran's economy has been hit hard by U.S.-led sanctions that have targeted its oil exports and its banking system. In response, Iran appears to have gone on a gold buying spree as it attempts to halt the downward spiral of its currency.

Petraeus has been married for 37 years and said "such behavior is unacceptable." Petraeus retired from the Army as a four-star general to become the CIA chief in September of 2011.