bbe4ed4e_1__Introduction__Dimension__Structure_
Sport venues, Olympic villages, FIFA team base hotels, media centres, etc. are usually constructed following environmental guidelines, along with green infrastructure that is added to a city, such as new/extended parks or planting additional trees. Beijing 2008 changed to low emission heating and relocated polluting industry to the outskirts. Often cities improve their metro systems, set up light rail and traffic control systems to reduce emission from cars. If the land used for a sport venue was previously a brownfield site or if ecological diversity is threatened at a newly used location, at least some environmental necessary projects are initiated. All these changes are usually observed closely by environmental watchdog organisations such as Greenpeace, and the media directs attention to reporting on environmental damage caused by mega events. However, time pressure and cost overruns encourage last-minute changes with the result that environmental obligations are relaxed or even overlooked ([64], p. 131). [Dimension “Structure”] 
Infrastructure
I n f r a s t r u c t u r e
K n o w l e d g e
N e t w o r k s
C u l t u r e
P o l i c y
E m o t i o n s
1. Introduction