The trend report describes the stress Urban Heat Island (UHI) on the city of Rotterdam located in the Netherlands. The UHI refers to the phenomenon where the temperature in the city is higher than the temperature of the surrounding areas. The UHI is caused by the change of land use. The describes solutions to this problem are to use urban vegetation. Another solution is the use of materials with a higher albedo. The last solution that is described is the change of the design of the urban area. Knowledge questions as well as discussion questions are provided as well.