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> Researchers have long known that mammals, including humans, lack a key enzyme -- one possessed by most of the animal kingdom and even plants -- that reverses severe sun damage

The story description is misleading. By careful omission it gives the impression that this enzyme is the only one that can repair sun-damaged DNA damaged by UV, emphasizing that humans lack it. OH CRUEL LORD! But we do in fact already have other enzymes that repair DNA damage and these are very old news. Ohio U. are just talking about one mechanism, but the press release makes it sound like the only one.

http://en.wikipedia.org/wiki/DNA_repair
http://www.ncbi.nlm.nih.gov/pubmed/8053698

Seems to be a trend with journal articles: Release the journal article and a popular press article; Take huge liberties with the popular press article to guarantee widespread media coverage (and we guess future funding and sunscreen merchandising). Note Ohio U. is the source of the journal article and this press release:
http://www.medicaldaily.com/news/20100725/550/researchers-discover-how-key-enzyme-repairs-sun-damaged-dna.htm

We saw the same thing recently with the silly "chicken or egg" article:
http://www.guardian.co.uk/science/2010/jul/18/chicken-and-egg-conundrum-solved

I'm not knocking either journal article. What they did was pretty cool, but would these people please learn to be honest in their press releases too? You would think they would have learned from Climategate?