For regular geometry seminars, follow the links in the right-hand column. To find all kinds of (scholarly) things going on in Cambridge, go to talks.cam.
For past and present Cambridge weather, the Computer Lab has a terrific collection of data.
For choosing where to live in Cambridge, these maps are interesting; but be aware that they’re from 2006, so (one would hope that) poorly connected areas may be better connected now. (The mapping project was funded by the UK Department for Transport when Frank Kelly of DPMMS was the chief scientific advisor.)