A sound generator

Dan the Dan on August 18, 2025 at 10:23 am

Link: https://www.smithsonianmag.com/innovation/...

Or the noise from sports stadiums.

Can the Noise in Sports Arenas Be Turned Into Electricity?

Seventeen-year-old Gyeongyun Lily Min is hopeful it can someday, after testing the concept on a scale model of an NBA stadium

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A sound generator

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Mike on August 18, 2025 at 7:59 am

Idea: A sound generator

Link: https://nelisglobal.org/unlocked-casestudy...

It could be a great idea to harness energy from urban noise.

Harvesting energy from urban noise | Nelis Global

Link: https://nelisglobal.org/unlocked

Abstract According to theÂ Intergovernmental Panel on Climate ChangeÂ (IPCC) the burning of coal, natural gas, and oil for electricity and heat is the largest single source of global greenhouse gas emissions.Â Electricity and heat production are responsible for 25% of the global greenhouse gas... Read more