Prof. Betsy Nabel shares 'Exposing the hubris of knowing' for @TEDMED http://hvrd.me/LBrSv
8:01 AM - 17 Apr 2015
0 replies
3 retweets
2 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.