We speak but does less for our environment! In 1881, Mary Elizabeth Walton created a method for lowering the environmental hazards of the smoke emitted from them locomotive, industrial and residential chimneys. 
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‌The recognition Mary received in her time was so less that her life remain unrecorded but her work does.
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‌The system she invented deflected the impurities into water tanks which are later flushed into suitable channels. She also invented a system for noise control for the elevated railways which New York City was struggling with for years.
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‌She sold the rights to the Metropolitan Railroad of Innovative York City for $10,000 and the system was soon obtained by other elevated railway companies, which prospered as a result of Walton's new, environmentally friendly system.
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‌She is a hero as Women's Journal puts“The most noted machinists and inventors of the century had given their attention to the subject without being able to provide a solution when, lo, a woman’s brain did the work.”
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‌It is said that one of the inventions was stolen by a male friend. And later, when her son inferred patent her railroad sound-deadening idea in his name, lest, God forbid, people cast her as a “strong-minded woman,” Walton is quoted as telling him, “Make your own inventions, and have your name put to them." as per Wednesday women
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‌She has truly proven that any subjugation can't stop a woman from being everything she ever wanted to be.
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