An article in Science Daily about this also. http://www.sciencedaily.com/releases/2012/09/120920194612.htm#.UFyNCpNDPn4.email Karen T-K *********************************************** 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 Guidelines for posting to BEE-L can be found at: http://honeybeeworld.com/bee-l/guidelines.htm