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."
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?
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.