Calestous Juma Retweeted Ramez Naam
Exponential improvementhttps://twitter.com/ramez/status/580453064873771011 …
Calestous Juma added,
4:35 AM - 15 May 2015
0 replies
4 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.