No direct link to the University of California press release, which is the original source for this story, and no link to the underlying journal article published in a very obscure, low-impact-factor journal. It's a bit early to be discussing this on Hacker News, methinks. Anyway, several other participants here have previously identified ScienceDaily (a press release dissemination service, nothing more) as a poor source for submissions to Hacker News.[1]
[1] https://news.ycombinator.com/item?id=8737181