Natural selection may not produce the best organisms
(Note that so far I've only read the "press-release" news item at this link so far, not the original paper yet.)
"While natural selection favors the most fit organisms around, evolutionary biologists have long wondered whether this leads to the best possible organisms in the long run.
A team of researchers at The University of Texas at Austin, led by Drs. Matthew Cowperthwaite and Lauren Ancel Meyers, has developed a new theory, which suggests that life may not always be optimal."
So... a sequence of local optimizations doesn't necessarily lead to a global optimum?
To anyone who's ever done any optimization, this is completely obvious (it happens all the time!). That's not to say that it's not useful to confirm a pretty well-known fact about optimization in this particular situation - but the way the story is worded, it kind of sounds like they expected different.
I guess this is another of those "try to make every bit of science news sound like a revolutionary breakthrough", as though just plain interesting science is somehow insufficient. If I can get time to read the paper, I will return and write some more.