A study conducted in Chicago found that a phenomenon scientists have dubbed “subsurface climate change” is deforming the soil beneath cities. This shifting of soil beneath urban areas could pose a problem for buildings and infrastructure, jeopardizing their long-term performance and durability, according to the research. Technically known as “subsurface heat islands,” subsurface climate change is the warming of the ground beneath our feet caused by heat released by buildings and underground transportation, such as subway systems. (Jacopo Prisco)