The problem of skyrocketing health costs has been well-documented here at Vox. This graph of health care spending as a percentage of our total GDP summarizes the issue.
The recent outlook may be a little better than it was, but regardless we spend a ludicrous amount on health care. There's a lot of ideas out there that could save money, but one of our favorites is deceptively simple: let nurses do more. There's plenty of evidence to back it up - Matt Yglesias explains in the video above in 90 seconds.