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?
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.
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.
"In recent weeks, new lines of attack have been raised to malign my character and my career. Even before I was nominated for any new position, a steady drip of manufactured charges painted a wholly false picture of me."
Originally published on Mon December 17, 2012 9:02 pm
Though we hear about them every holiday season in that famous song, chestnuts – whether roasting on an open fire or otherwise – have been noticeably absent from many American tables for decades, thanks to a deadly fungus that decimated the species near half a century ago. But a small army of determined growers have been on a seemingly quixotic quest to put chestnuts back on the American table, and they're just starting to see results.