Heat islands are urbanized areas that experience higher temperatures than outlying areas. Structures such as buildings, roads, and other infrastructure absorb and re-emit the sun's heat more than natural landscapes such as forests and water bodies. Urban areas, where these structures are highly concentrated and greenery is limited, become “islands” of higher temperatures relative to outlying areas. (Source: EPA Heat Island Effect | US EPA)
(Inside Climate News)
Renewable Energy
Bike path in South Korea, which connects two cities, is situated in the middle of an eight-lane highway. It is topped with solar panels which produce clean energy and it lights up the streets below.
(ABC News)