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.
Originally published on Fri December 14, 2012 12:03 pm
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."
This is SCIENCE FRIDAY, I'm Ira Flatow. Of course we'll be keeping you up to date this hour on the shooting spree that's been going on in Newtown, Connecticut. But first something different. When Alan Alda was 11, he asked one of his teachers: What is a flame? The answer he got back was oxidation. Accurate, yeah, but not very helpful.
Up next, what is intelligence? What is thought? What does it really mean to have a mind? And if we can answer those questions, is it possible for people to reverse-engineer the process and build an artificial mind? Sure, there are things like Siri, which can understand enough of your question to pull up directions to the restaurant, and there's IBM's Watson, which took on human contestants in a game of "Jeopardy!" and won. But how to jump the gap from those to something everyone would agree is truly intelligent?
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.