Owl wing design reduces aircraft, wind turbine noise pollution

Trailing-edge noise is the dominant source of sound from aeronautical and turbine engines like those in airplanes, drones, and wind turbines. Suppressing this noise pollution is a major environmental goal for some urban areas.

Local emissions amplify regional haze and particle growth

New particle formation (NPF) is a major source of aerosol particles in the global atmosphere. In polluted megacities, such as Beijing, the role of new particle formation events and their contribution to haze formation through ...

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