Disappointing to see the last sentence in the article is an ad hominem attack against all those who may be skeptical. Perhaps the article would have better ende

Disappointing to see the last sentence in the article is an ad hominem attack against all those who may be skeptical. Perhaps the article would have better ended with a link to the study or at least its title. (It's available here to read for 2 days for $10 : http://www.pnas.org/content/early/2011/12/19/1106077109.abstract http://www.pnas.org/content/early/2011/12/19/1106077109.abst...)