The Grandest Challenge by Dr. Abdallah Daar & Dr. Peter Singer http://bit.ly/qdnoHV @AbdallahDaar @PeterASinger
3:43 PM - 2 Oct 2011
0 replies
2 retweets
0 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.