Once again (for clarity), IT IS THE ARTICLE THAT IS MAKING THE CLAIM, I am challenging it, so therefore the burden of proof lies with the article to prove its assertion or stay silent. One rogue author's opinion is not a "fact" just because someone happened to publish it. Since it is an extraordinary claim, if you are so concerned about evidence then supply it. I will be satisfied with two sources - which is a low standard for such a way-out assertion - so i'm being generous here.