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Water, foam, sand, blankets, and even baking soda are well-known solutions to putting out flames. But sound waves? That has to be a first. But that is exactly what two young eng...About 9 years agobaseball41 added a news bookmark.
On April 22, 1970, twenty million people across the United States took to the streets to ask government officials to take preventive measures to protect the environment. Today, ...About 9 years agobaseball41is now following baseballmaster.
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