Nasa scientists are baffled by the discovery of Carbon tetrachloride (CCl4), which was once used in applications such as dry cleaning and as a fire-extinguishing agent
A chemical used in dry cleaning and fire extinguishers may have been phased out in recent years but NASA says that carbon tetrachloride (CCl4) is still being spewed into the atmosphere from an unknown source
The research shows worldwide emissions of carbon tetrachloride (CCl4) average 39 kilotons per year, which was once used in applications such as dry cleaning and as a fire-extinguishing agent
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