RT @GGCSLondon: Footage of #GGCS2013 at http://bit.ly/YrO071 including talks by @iamwill, @calestous and @BillGates
0 replies
1 retweet
1 like
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.