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Agricultural Matters
Yara says food crisis coming
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<blockquote data-quote="Cowabunga" data-source="post: 7824503" data-attributes="member: 718"><p>Actually the exhaust from Adblue catalytically reduced diesel exhaust consists of C02, water vapour and nitrogen gas, not ammonia. Nitrogen makes up 78% of our air and I seriously doubt whether that emitted by 'clean' exhausts make even a tiny jot of difference.</p><p>If cities were polluted by ammonia you would smell it and stuff like sandstone buildings would be bleached, as opposed to the historic corrosion and blackness that used to be caused by a combination of sulphur, soot and acid rain. All of which has gone away in recent decades of course, along with ozone holes.</p><p></p><p>So we have actually made a difference since about 1990 and that's without even touching on lead fumes in the air when petrol was heavily fortified with it.</p></blockquote><p></p>
[QUOTE="Cowabunga, post: 7824503, member: 718"] Actually the exhaust from Adblue catalytically reduced diesel exhaust consists of C02, water vapour and nitrogen gas, not ammonia. Nitrogen makes up 78% of our air and I seriously doubt whether that emitted by 'clean' exhausts make even a tiny jot of difference. If cities were polluted by ammonia you would smell it and stuff like sandstone buildings would be bleached, as opposed to the historic corrosion and blackness that used to be caused by a combination of sulphur, soot and acid rain. All of which has gone away in recent decades of course, along with ozone holes. So we have actually made a difference since about 1990 and that's without even touching on lead fumes in the air when petrol was heavily fortified with it. [/QUOTE]
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Yara says food crisis coming
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