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Graphical depiction of active noise reduction. Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first.
The 2019 Kim Kim River toxic pollution is a water pollution incident that occurred on 7 March 2019 caused by illegal chemical waste dumping at the Kim Kim River in Pasir Gudang of Johor in Malaysia.
Visual pollution is the degradation of the visual environment due to unattractive or disruptive elements that negatively impact the aesthetic quality of an area. It can affect urban, suburban, and natural landscapes. [1]
Climate change mitigation (or decarbonisation) is action to limit the greenhouse gases in the atmosphere that cause climate change.Climate change mitigation actions include conserving energy and replacing fossil fuels with clean energy sources.