How do Green Map projects from different countries work together to achieve common goals? This short video highlights the '4Bs Hive' -- Berlin, Budapest, Bristol and Bistrita -- European Green Map projects from Germany, Hungary, the UK and Romania and their development as a collaborative network. Watch as Ciprian Samoila, Gergo Horvarth, Peter van de Loo and Steve Parry exchange expertise and plan upcoming expansions. Special thanks to by Bjela Prossowsky and Y68 for this concise and inspiring documentary, Steve for his ongoing effort as Project Manager and to Ciprian for hosting the meeting. Follow the story at Steve's greenbristol.blogspot.com, too.