Over at Backreaction, Bee has posted a fairly readable introduction to extra dimensions, including a sort of taxonomy of different models. If you're interested in that sort of thing, take a look.
It almost makes up for the dreadful visual pun from a little while back.
(There's other good stuff there, including a list of stupid paper titles, and a review of Peter Woit's book. There are worse ways to kill time than spending a few minutes poking around that blog.)
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Sharon Begley has an interesting column today in the WSJ on the growing chorus of voices aiming to discredit string theory.
There's a kerfuffle in the physics blogosphere these days over the somewhat arcane issue of TrackBacks to posts on the ArXiV, the commual preprint server where researchers can post drafts of the papers that they have submitted to research journals (or, if they'
Is it actually possible that Buckaroo did go there, and that's why there was no sequel?