- Tara Thean
Many cities are noisy. In Singapore, the average outdoor noise levels during the day are about equal to the noise one could expect from a vacuum cleaner. Excessive noise levels can have serious health consequences, ranging from higher risks of hypertension and cardiovascular disease to hearing impairment, low-quality sleep, and changes in social behaviour. Further, a noisy environment can affect non-human life such as birds that rely on vocalizations for sexual selection and predator awareness. This case study discusses measures that have been taken to mitigate noise pollution and the challenges of doing so in a densely populated city as it continues developing.