The lectures, entitled “A Unified View of the Universe,” begin at 7 p.m. Seating is on a first-come, first-served basis. The lecture will also be Web cast on ...

Last week the California Institute of Technology announced that the full text of Richard Feynman’s Lectures On Physics are now available online for free, at feynmanlectures.caltech.edu. You’ve perhaps ...

When I was young, there was no such thing as the World Wide Web or video streaming. If you wanted to watch something, you had to wait until it appeared on television. Sometimes you might think, "Hey, ...