Good comments. I sent out the article because I know there has been discussion of this issue several times in past years (with regards to "white lists" vs. "black lists", proposed regulations about seed importing/transporting, etc.). I'm not sure what I think about their conclusions yet. Your comments would seem to apply to the global warming controversy as well. Thanks. --Lee Poulsen Pasadena area, California, USDA Zone 9-10 On Sep 17, 2004, at 2:03 AM, Kelly O'Neill wrote: > On 16 Sep 2004 at 11:39, Lee Poulsen wrote: > >> ...an interesting journal article that >> just appeared showing that it is as yet unknown and unproven > whether >> invasive species actually cause the extinction of native species. > > Scientists who use technically true information to make clearly false > conclusions are in high demand.