The oldest and, some would argue, wisest justices on the Supreme Court are at the top of their game – and are fast approaching their day of reckoning.
It's not their health that's at issue, though together Justices Ruth Bader Ginsburg and Antonin Scalia have lived more than 160 years. Nor is it their acumen; Ginsburg still works assiduously into the wee hours of the night, while Scalia writes and rails more provocatively than his colleagues...