The development of our time, is due to great progresses in technology and an enormous ex-plosion of knowledge, has lead to an increased effort of our attention as a result of a boundless torrent of information . Higher productivity and efficiency in our workplaces and homes crea-tes fewer opportunities for rest, leading to a community where stress has become a national disease. Recreation is an important part of our lives in order to be able to deal with stress and is now considered to be an essential resource when it comes to sustainable development. Green spaces are therefore today viewed to play a considerable roll for the national health. Nature has proven to have positive influence on man which leads to a decrease in blood pressure, an increase in power of concentration and lowered production of stress hormones.

 Föredömet Sverige i korthetÅr 1930 kunde Sverige för första gången klassas som ett invandrarland. Allt sedan dess har den demografiska sammansättningen varit under stor förändring. I samma tidsperiod började de mänskliga rättigheterna sitt intåg på den internationella scenen. "Allas likhet i värde och rättigheter" tydliggjordes i FN:s allmänna förklaring om de mänskliga rättigheterna, som mynnade ut i flertalet konventioner, vilka Sverige inte varit sena på att ratificera. Trots att Sverige har undertecknat och ratificerat konventionerna som förkunnade allas lika värde, var det ändock tveksamt om alla behandlades lika i landet.Sverige blundade länge för förekomsten av diskriminering, åtminstone på grund av etnicitet och religion.

Stormwater in urban areas has been treated as a problem for a long time. The large proportion of impermeable surfaces inhibits the water from infiltrating in the ground to the same extent that it does in nature. This causes intensive surface flow during rain, which in turn causes inconveniences such as decreased accessability, floods and increased risk of desease spreading. Drainage through pipes is the traditional and usually functional metod for storm water disposal. That is as long as water flows are moderate. But precipitation varies naturally in amount and intensity and additional impermeable surfaces make some pipes insufficient for heavy or lasting precipitation.