For the first time, researchers at North Carolina State University have demonstrated that microscopic "two-faced" spheres whose halves are physically or chemically different -- so-called Janus particles -- will move like stealthy submarines when an alternating electrical field is applied to liquid surrounding the particles.
The historic takeover of Fannie Mae and Freddie Mac, which could come as soon as this weekend, moved to the forefront of the presidential campaign Saturday.
In the arena that night, the whole last minute was drowned out by cheers — and then when the soaring music swelled, the confetti rained down as the harbinger of balloons and the hopeful first family took the stage, forget about it — it was a perfect end to a convention that last Monday, no one even knew if it would happen. But it did, and I'm so glad to have been there.
