The Earth's rising temperatures due to climate change are a significant challenge – especially in urban areas because surfaces such as roadways and rooftops absorb and emit heat to a greater extent than most natural surfaces. An " urban heat island" (UHI) occurs when cities experience warmer temperatures than nearby rural areas. One way to combat UHI is to increase green space by planting trees and adding parks and green roofs. In this team challenge lesson, students learn about UHI and create