Dang! I can't remember which is which now. This is a game that has been played out in biography.com where you can see Tilda Swinton-Bowie and Hugh Wilde-Grant from the Arts Block, along with a gallery of other pairs. Mais revenons-nous a nos savamts:
It's not just the open-neck shirt and that the ould hair has slipped from the top to the bottom of the head, is it? But they are not identical twins separated at birth. Left was born 14 Oct 46 and Right was born 03 Sep 29. Since 1994 Left has been been making the running in Big Science (e.g. 1994c PMID 7920649) while Right has been on the run.
Mouse over to reveal: Left J Craig Venter | Right JJ Whitey Bulger.