Fresh air! Times Square! Humanity has been carving out places to safely live for thousands of years now. We've taken large plots of land and filled them with buildings, cars, railways, roads, bright lights, and many other things that define city-living. So, could these modifications to the natural world have an impact on our natural cycles? Can these changes impact biological clocks? Listen to the latest Question Your World Radio Report from the Science Museum of Virginia to find out.