1. Some of the most interesting pieces of street art in NYC http://bit.ly/fxcvGP

2. Science historian, James Burke's Connections http://bit.ly/gDBCLV

3. Cambridge University shows how to respond to pressure to censor http://bit.ly/f3aLlo

4. Collection of photos from Fairs & World Expos http://bit.ly/gOEQxM

5. A sculpture park with the human works of Norway's Gustav Vigeland http://bit.ly/fsE4co