An interesting letter in Nature on this topic: http://www.nature.com/nature/journal/v473/n7347/full/473285a.html
Dr. David W. Inouye, Professor Dept. of Biology University of Maryland College Park, MD 20742-4415 Rocky Mtn. Biological Laboratory PO Box 519 Crested Butte, CO 81224 [email protected]301-405-6946
