Letters archive

This is an invitation to all UK chiropractors to stop the confusions, misunderstandings and animosities that arose during the recent debate about the effectiveness of chiropractic for non-spinal conditions such as asthma and otitis. I herewith invite all of you to state clearly where you stand. Many of your websites promote chiropractic as a treatment …

Andrew Robinson tells us the Etruscans were a "prehistoric civilisation that arose in western Italy – in what is now Tuscany and parts of Umbria" (30 May, p 24) . In fact, the great Etruscan civilisation – the Etruscan Federation – arose in today's northern Lazio, including Rome itself, as my husband and I detail …

You report on a study of animal circuses by the University of Bristol, UK (23 May, p 5) . The British government is still stalling over a pledge made three years ago to stop wild animals appearing in circuses. This timely study shows why it must follow through on its commitment. It shouldn't really take …

In discussing whether the universe is flat, Eugenie Samuel Reich compares this premise to the myth that once upon a time, we believed the Earth was flat (16 May, p 15). However, if the BBC's QI programme is correct, and its entire stall is set out on reporting the truth, there is no evidence whatever …

C. P. Snow correctly identified the self-segregation of our intellectuals into two mutually isolated cultures (2 May, p 26) , but he did not understand the reason behind their mutual contempt, which is their "vector disparity". Any thought process can be classified into one of two modes, either analytical/investigative or creative/constructive. Both cultures include examples …

I think Feedback and Paul Spicker took a poorly aimed shot at the advertisement for "5 star Luxury European River Cruises" when remarking on its assertion that the cabin windows don't sink below water level "even when passing under low bridges" (30 May) . Our vintage paddle steamers on the Murray river often need to …

In his review of Alanna Mitchell's Seasick , Fred Pearce states that the Black Sea "has been lifeless for thousands of years" (9 May, p 45). This is not true: the upper levels of the Black Sea have lots of aquatic life. It is only the lower level which is anoxic.

• In our story on premature babies' posture and IQ, we should have said that researchers filmed the babies 11 to 16 weeks after their expected birth date, had they reached full term, rather than after their actual birth date (13 June, p 12) . • The correct link to the work by Mark Bulmer …