<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Since Nitrogen may be the bigger problem, do we need a Nitrogen tax too? Maybe a sulfur and fluorine tax?? <br></span></div><div><br><span></span></div><div><span>http://en.wikipedia.org/wiki/Greenhouse_gas#Global_warming_potential</span></div><div><span><br></span></div><div><br><span></span></div><table class="wikitable"><caption>Atmospheric lifetime and <a href="http://en.wikipedia.org/wiki/Global_warming_potential" title="Global warming potential" class="mw-redirect">GWP</a> relative to CO<sub>2</sub> at different time horizon for various greenhouse gases.</caption>
<tbody><tr>
<th rowspan="2" style="text-align: left;">Gas name</th>
<th rowspan="2">Chemical<br>
formula</th>
<th rowspan="2">Lifetime<br>
(years)</th>
<th colspan="3">Global warming potential (GWP) for given time horizon</th>
</tr>
<tr>
<th>20-yr</th>
<th>100-yr</th>
<th>500-yr</th>
</tr>
<tr>
<td style="text-align: left;"><b><a href="http://en.wikipedia.org/wiki/Carbon_dioxide" title="Carbon dioxide">Carbon dioxide</a></b></td>
<td style="text-align: center;">CO<sub>2</sub></td>
<td>See above</td>
<td>1</td>
<td>1</td>
<td>1</td>
</tr>
<tr>
<td style="text-align: left;"><b><a href="http://en.wikipedia.org/wiki/Methane" title="Methane">Methane</a></b></td>
<td style="text-align: center;">CH<sub>4</sub></td>
<td>12</td>
<td>72</td>
<td>25</td>
<td>7.6</td>
</tr>
<tr>
<td style="text-align: left;"><b><a href="http://en.wikipedia.org/wiki/Nitrous_oxide" title="Nitrous oxide">Nitrous oxide</a></b></td>
<td style="text-align: center;">N<sub>2</sub>O</td>
<td>114</td>
<td>289</td>
<td>298</td>
<td>153</td>
</tr>
<tr>
<td style="text-align: left;"><b><a href="http://en.wikipedia.org/wiki/CFC-12" title="CFC-12" class="mw-redirect">CFC-12</a></b></td>
<td style="text-align: center;">CCl<sub>2</sub>F<sub>2</sub></td>
<td>100</td>
<td>11 000</td>
<td>10 900</td>
<td>5 200</td>
</tr>
<tr>
<td style="text-align: left;"><b><a href="http://en.wikipedia.org/wiki/HCFC-22" title="HCFC-22" class="mw-redirect">HCFC-22</a></b></td>
<td style="text-align: center;">CHClF<sub>2</sub></td>
<td>12</td>
<td>5 160</td>
<td>1 810</td>
<td>549</td>
</tr>
<tr>
<td style="text-align: left;"><b><a href="http://en.wikipedia.org/wiki/Tetrafluoromethane" title="Tetrafluoromethane">Tetrafluoromethane</a></b></td>
<td style="text-align: center;">CF<sub>4</sub></td>
<td>50 000</td>
<td>5 210</td>
<td>7 390</td>
<td>11 200</td>
</tr>
<tr>
<td style="text-align: left;"><b><a href="http://en.wikipedia.org/wiki/Hexafluoroethane" title="Hexafluoroethane">Hexafluoroethane</a></b></td>
<td style="text-align: center;">C<sub>2</sub>F<sub>6</sub></td>
<td>10 000</td>
<td>8 630</td>
<td>12 200</td>
<td>18 200</td>
</tr>
<tr>
<td style="text-align: left;"><b><a href="http://en.wikipedia.org/wiki/Sulphur_hexafluoride" title="Sulphur hexafluoride" class="mw-redirect">Sulphur hexafluoride</a></b></td>
<td style="text-align: center;">SF<sub>6</sub></td>
<td>3 200</td>
<td>16 300</td>
<td>22 800</td>
<td>32 600</td>
</tr>
<tr>
<td style="text-align: left;"><b><a href="http://en.wikipedia.org/wiki/Nitrogen_trifluoride" title="Nitrogen trifluoride">Nitrogen trifluoride</a></b></td>
<td style="text-align: center;">NF<sub>3</sub></td>
<td>740</td>
<td>12 300</td>
<td>17 200</td>
<td>20 700</td></tr></tbody></table><div><br></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font face="Arial" size="2"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> elitalking <elitalking@rockbridge.net><br><b><span style="font-weight: bold;">To:</span></b> Green Building <greenbuilding@lists.bioenergylists.org><br><b><span style="font-weight: bold;">Sent:</span></b> Thursday, September 1, 2011 11:09 AM<br><b><span style="font-weight: bold;">Subject:</span></b> Re: [Greenbuilding] Drying Clothes<br></font><br><meta http-equiv="x-dns-prefetch-control" content="off"><div id="yiv580034974">
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<div><font face="Arial" size="2">Amen to Carbon Tax for simplicity of getting to the
point and getting the non caring to participate in the solution. </font></div>
<div><font face="Arial" size="2">Eli</font><br></div></div><br></div></div></div></body></html>