The Moses scheme promised to save Venice from a watery grave. But the election of a new mayor has put a question mark over the project

The Know-It-All By A J Jacobs HEINEMANN pounds 10.99 (386pp) pounds 9.99 (free p&p) from 0870 079 8897

Popular culture reduces us to the status of infants, gawping at the discovery that adults have sex

Collecting: Andy Warhol's art isn't a 15-minute wonder

Heaven: An Exhibition That Will Break Your Heart Tate Gallery, Liverpool

Lads and ladettes, YBAs, Eighties irony with extra computers - that was the decade, that was. By Michael Bracewell

Two twentysomethings were determined to write a sitcom for their generation - Spaced is the result

The Nineties: What the f**k was that all about? by John Robb (Ebury Press, pounds 9.99)

DAVID THOMAS suggests that the broadening of the definition of "rape" relies on outdated Victorian presumptions that women's chastity is sacred, and that this clashes with a social trend towards increased "promiscuity" ("Does unsafe sex against your will amount to rape?" Real Life, 29 August). Wrong. Objections to rape are not based on the idea that women's chastity must not be violated. They are based on the idea that women have equal rights with men to determine when and how they have sex. The fact that one may frequently say "yes" to sex does not in any way impinge on one's right to sometimes say "no".

Hitchcock managed to capture and throw back at us the essence of our 20th-century fears