Internet opens elite colleges to all

There has never been a more exciting time for the intellectually curious.

The world's top universities have come late to the world of online education, but they're arriving at last, creating an all-you-can eat online buffet of information.

And mostly, they are giving it away.

MIT's initiative is the largest, but the trend is spreading. More than 100 universities worldwide, including Johns Hopkins, Tufts and Notre Dame, have joined MIT in a consortium of schools promoting their own open courseware. You no longer need a Princeton ID to hear the prominent guests who speak regularly on campus, just an Internet connection. This month, Yale announced it would make material from seven popular courses available online, with 30 more to follow.

As with many technology trends, new services and platforms are driving change. Last spring marked the debut of "iTunes U," a section of Apple's popular music and video downloading service now publicly hosting free material from 28 colleges. Meanwhile, the University of California, Berkeley recently announced it would be the first to make full course lectures available on YouTube.