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Listen to part of a lecture in an environmental science class. Professor: Today we're going to discuss the concept of 'urban heat islands' and some surprising solutions. As you know, cities tend to be warmer than surrounding rural areas because of concrete, asphalt, and lack of vegetation. But a recent study from Arizona State University suggests that one unexpected factor—parking lots—plays a significant role. The study found that in some desert cities, parking lots can cover up to 40% of the downtown area, and they absorb heat during the day, releasing it at night. This can raise nighttime temperatures by several degrees. However, the researchers proposed a simple fix: painting parking lots with a reflective coating, or better yet, replacing some with shaded structures. They also emphasized that adding trees and green spaces, though helpful, is not enough alone. The key is to combine reflective surfaces with strategic shade. So, while we often think of large-scale solutions, sometimes small changes in infrastructure can have a big impact. Now, what does this mean for city planners? Well, it suggests that even minor modifications to existing structures could mitigate the heat island effect significantly.