There are at least two other lists carrying calendars for Boston area lectures on science and engineering. One is maintained by George Mokray; you can sign up to receive his mailings by dropping a note to gmoke@world.std.com. Another is by David Nunez, who compiles an events list for the members of the Dorkbot Boston GoogleGroup. The New England Model Engineering Society maintains an interesting list of things to see in New England. And of course there are several calendars organized with professionals in mind, which despite that restriction often carry events of general interest. Those that I know about are listed below.
-- Fred Hapgood
Biology Calendar Details List signup
Boston Area Philosophy Calendar. Mailing list
Boston Area Neuroscience Group Mailing list
Boston Area Neuroscience & Cognitive Science Talks
Harvard Medical Community Events Calendar
Computational Research in Boston
Greater Boston Area Theoretical Chemistry Lecture Series
Boston Society of Cognitive Science
George Mokray's Energy (and other) Events
END