Here in this article at the NY Times you can read about how 440 scientists in 32 labs have been working to understand what all those mysterious bits of DNA in our chromosomes do.
They make a point of as if it were a discovery, but of course there is no "junk" DNA : all of it is useful and does things, we just didn't know what it did before.
I found it hard to understand why anyone would think DNA had lots of "unused bits". ( It also makes me wonder what other areas of knowledge are being ignored because "nobody thought there was anything much there". Any ideas, dear reader? )
This group of discoveries will bring big changes in future to the medical and health area. Big changes.