That article is quite vague, here's a much clearer article about the recent news.
http://io9.com/new-test-suggests-nas...ork-1701188933
The above gives a good explanation of the experiment, and here's a skeptical article that doesn't focus on the experiment itself but has concerns about its reproducibility:
http://www.popularmechanics.com/scie...e-controversy/
Assuming this isn't cold fusion and the effect turns out to reproducible, it seems pretty interesting. Far less impressive results than its big proponent predicted, but could still be useful.