Dr Ferrari and I have been corresponding about his studies for a long time. We've discussed his data extensively, and various ways to analyze and interpret it. To date, I have a hard time finding any link between colony depopulation and geomagnetic flux. However, his findings are of great interest, re the impact of GMF on bee navigation, but IMHO need to be better confirmed. This will be much easier when we get the sorts of hive monitoring devices discussed at the recent WAS conference. A few flight monitors could then be used to plot daily flight, or proportion of exiting bees to returning bees, vs geomagnetic flux. -- Randy Oliver Grass Valley, CA www.ScientificBeekeeping.com *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html