The Regional Park of the Po River Delta1 was set up in 1988 (it belongs to a Consortium of Public Bodies). It extends over 54,000 hectares of land and stretches across 45 km of the Italian Eastern coastline (45 km of the more than 90 km that go between the provinces of Ferrara and Ravenna)2 and is one of the largest and most significant natural parks in Italy.

Natural parks are a place where science communicates with the public, involving dimensions ranging from the knowledge of living species to the relationship between man and nature, the environmental policy decisions and the anthropic impact assessments. Natural parks are therefore an important arena for scientific communication where the "shared participation" tools play a fundamental role. To this end, we report a few international experiences that illustrate the role of the interest holders and the importance of coordination of the parties involved in the management of parks.

On 16 January 2004, the United Nations Secretary-General and Nobel Peace Prize winner Kofi Annan launched a Global Media Aids Initiative, with the aim of convincing the press, radio, television and Internet to join the fight against what has been called the "forgotten disease of the forgotten continent". Throughout the world, over 40 million people have the Hiv virus. In 2003 there were 5 million new infections and 3 million deaths were caused by Aids.

"We can only appeal to society, considering that governments and parties have fallen constantly short of expectations since the late eighties. The public must know that without research there is no innovation, and without innovation there is no state-of-theart. The lack of research is a handicap for the development of the country". The words of Silvio Garattini, director of Milan's Mario Negri Institute, reveal rage and passion. This is how he explained the reasons why more than one year ago 1,500 Italian scientists made an unprecedented, resolute and unmediated appeal to the general public to back research in Italy.