More than 20 field projects followed, on such themes as energy flows and recycling in Lae (Papua New Guinea), urban flora and fauna in Berlin (Germany) and in Xalapa (Mexico), children in the city of Toronto (Canada), urban green spaces in Dayton (USA), Seoul (Rep. Korea) and Valencia (Spain) and linkages between the urban and rural environments in Bangkok (Thailand) and Rome (Italy).

UNESCO: Urban connections of biosphere reserves

Rep. Bill Richardson, D-New Mexico, plans to arrive in North Korea on Sunday to meet with the Pyongyang government on issues including peace with South Korea, missing American soldiers, and the food shortage in North Korea.

CNN: U.S. diplomat plans visit to Korea