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Smog filled sky as seen from an aeroplane over Delhi
West Kirby, Wirral, Merseyside, England, Britain, April 9th, 2025, Coastal scum on sea surface
Shoreline view with algae floating in calm water and a gabion structure of rocks held in wire mesh for erosion control. A natural and engineered riverside scene during golden hour near buildings.
Waterfront power station against blue sky, with copy space, Marsaxlokk, Malta
Overlooking the skyline of Bangkok's bustling downtown area. Bangkok skyscraper city with air pollution PM2.5

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