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If you're fascinated by the story of anti-virus software pioneer John McAfee and his flight from Belize after authorities there said they want to talk to him about a neighbor's murder, CNBC has abo

Nothing beats the smell of a live Christmas tree in your home, but how can you keep the needles on your tree and off your carpet? Rick Bates, professor of horticulture at Penn State University, offers tips for how to properly care for your Christmas tree this holiday season.

Did you know plants use quantum mechanics every day? That quantum computers can hack the encryption used in online commerce? Or that a 'quantum internet' could someday teleport your emails? MIT's Seth Lloyd discusses those and other quantum mysteries in this episode of "Ask a quantum mechanic."

Alan Alda founded The Flame Challenge last year to promote better science communication, and he started by asking scientists to come up with a kid-friendly explanation for a flame. Now, Alda is back with round two of the popular contest, and kids want to know: What is time?

Egyptians are voting on a new constitution - but the vote is polarizing the country. Meanwhile, in Syria, the main opposition group is now recognized by the U.S., but there are questions about al-Qaeda affiliates fighting alongside them. To make sense of the developments, host Michel Martin talks with Abderrahim Foukara of Al Jazeera International.

Lawrence Guyot spent his life fighting for civil rights - but often at great personal cost. He was jailed and beaten regularly by police in the Deep South while helping black people get involved in politics. Host Michel Martin speaks with Washington, D.C. Congresswoman Eleanor Holmes Norton, who worked alongside Guyot, about his life and activism.

In this week's Barbershop, the guys weigh in on U.N. Ambassador Susan Rice withdrawing her name from consideration for secretary of state. They also discuss Michigan's right-to-work law and whether unions are still relevant today.

For three consecutive weeks, the Egyptian opposition has called mass protests against a controversial draft constitution that Egyptians are being asked to vote on beginning Saturday.

At each rally, protesters chanted against the document and its key proponents: The Muslim Brotherhood and President Mohamed Morsi, who was among the group's leaders before he was elected Egypt's president.

But the opposition appears to be losing momentum, while the Islamists still appear to be going strong.