Hello:
As a point of interest, you may wish to go the Canadian Broadcasting 's(CBC)
Quirks and Quarks Site,
http://www.radio.cbc.ca/programs/quirks/archives/99-00/nov2099.htm and
listen , in real-time,to a discussion about this topic. The interview
includes Dr. Losey, author of the report from Cornell University, Dr. Chip
Taylor from the University of Kansas, and Dr. Mark Sears from the University
of Guelph.
Keith
Grimsby, Ontario