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Damage at a chemical plant was also reported, with hundreds of people buried and tonnes of poisonous liquid ammonia released.
ECONOMIST: China
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Pure ammonia is a clear liquid at normal temperatures with a pungent smell.
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Likewise motorists and corporations will respond to rising prices by buying smaller cars and exploring alternatives, like powering cars with ammonia or turning coal into liquid fuel.
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After the manure is processed in the digester, liquid waste enters an aeration bin, where it is treated for ammonia and other pollutants.
FORBES: Written by John Platt
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To simulate the atmosphere, they have built a special cloud chamber of their own, with the air manufactured from scratch, using liquid nitrogen and oxygen together with precise amounts of trace compounds, including sulphuric acid and ammonia.
ECONOMIST: Climate science (II)