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	<title>Comments on: Giant smoke ring hovers over theme&#160;park</title>
	<atom:link href="http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html/feed" rel="self" type="application/rss+xml" />
	<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html</link>
	<description>Brain candy for Happy Mutants</description>
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	<item>
		<title>By: Anonymous</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525833</link>
		<dc:creator>Anonymous</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525833</guid>
		<description>Maybe God just lost her contact lens?</description>
		<content:encoded><![CDATA[<p>Maybe God just lost her contact lens?</p>
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	</item>
	<item>
		<title>By: Anonymous</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-526091</link>
		<dc:creator>Anonymous</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-526091</guid>
		<description>I saw something similar years ago. It was during an air show in San Diego and it hovered over over the airfield but it was vertical. I stared at it for about 20 minutes, no one else seemed to notice it (it really required binoculars to see clearly).

but is was very strange. </description>
		<content:encoded><![CDATA[<p>I saw something similar years ago. It was during an air show in San Diego and it hovered over over the airfield but it was vertical. I stared at it for about 20 minutes, no one else seemed to notice it (it really required binoculars to see clearly).</p>
<p>but is was very strange. </p>
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	</item>
	<item>
		<title>By: Anonymous</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525581</link>
		<dc:creator>Anonymous</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525581</guid>
		<description>run!!! run!!! the sky is falling the sky is falling</description>
		<content:encoded><![CDATA[<p>run!!! run!!! the sky is falling the sky is falling</p>
]]></content:encoded>
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	<item>
		<title>By: Takuan</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525583</link>
		<dc:creator>Takuan</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525583</guid>
		<description>hoop (light weight?) tower near by... mono-filament fish line overhead trolley system? </description>
		<content:encoded><![CDATA[<p>hoop (light weight?) tower near by&#8230; mono-filament fish line overhead trolley system? </p>
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	</item>
	<item>
		<title>By: Anonymous</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525584</link>
		<dc:creator>Anonymous</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525584</guid>
		<description>King&#039;s Dominion has a massive rollercoaster called the Volcano that features (you guessed it)...a volcano. It blows smoke rings. End of story.</description>
		<content:encoded><![CDATA[<p>King&#8217;s Dominion has a massive rollercoaster called the Volcano that features (you guessed it)&#8230;a volcano. It blows smoke rings. End of story.</p>
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	</item>
	<item>
		<title>By: Anonymous</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525589</link>
		<dc:creator>Anonymous</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525589</guid>
		<description>Very common sight at one time in Nevada and certain tropical islands.  This one just seems a bit smaller.

http://www.bordalierinstitute.com/images/nuclearExplosion.jpg</description>
		<content:encoded><![CDATA[<p>Very common sight at one time in Nevada and certain tropical islands.  This one just seems a bit smaller.</p>
<p><a href="http://www.bordalierinstitute.com/images/nuclearExplosion.jpg" rel="nofollow">http://www.bordalierinstitute.com/images/nuclearExplosion.jpg</a></p>
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	<item>
		<title>By: toxonix</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525849</link>
		<dc:creator>toxonix</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525849</guid>
		<description>I warned them about the distortion in the cloaking field around narrow angled edges. </description>
		<content:encoded><![CDATA[<p>I warned them about the distortion in the cloaking field around narrow angled edges. </p>
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	</item>
	<item>
		<title>By: ChunkyMonkeyBrain</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525596</link>
		<dc:creator>ChunkyMonkeyBrain</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525596</guid>
		<description>&quot;I seem to have lost my contact lens - has anyone seen it?&quot;</description>
		<content:encoded><![CDATA[<p>&#8220;I seem to have lost my contact lens &#8211; has anyone seen it?&#8221;</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: hawkins</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525600</link>
		<dc:creator>hawkins</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525600</guid>
		<description>This is a smoke ring from the fake volcano in the park.

It&#039;s a feature, as we say.

This is discussed at length on sites ranging from the roller coaster critics:
http://www.thecoastercritic.com/2009/06/ufo-over-kings-domininion-volcano.html 

...to the bad astronomy folks:

http://www.bautforum.com/life-space/89623-ring-ufo-above-kings-dominion.html

</description>
		<content:encoded><![CDATA[<p>This is a smoke ring from the fake volcano in the park.</p>
<p>It&#8217;s a feature, as we say.</p>
<p>This is discussed at length on sites ranging from the roller coaster critics:<br />
<a href="http://www.thecoastercritic.com/2009/06/ufo-over-kings-domininion-volcano.html" rel="nofollow">http://www.thecoastercritic.com/2009/06/ufo-over-kings-domininion-volcano.html</a> </p>
<p>&#8230;to the bad astronomy folks:</p>
<p><a href="http://www.bautforum.com/life-space/89623-ring-ufo-above-kings-dominion.html" rel="nofollow">http://www.bautforum.com/life-space/89623-ring-ufo-above-kings-dominion.html</a></p>
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	</item>
	<item>
		<title>By: Anonymous</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525601</link>
		<dc:creator>Anonymous</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525601</guid>
		<description>I, for one, welcome our smokey ringed overlords.</description>
		<content:encoded><![CDATA[<p>I, for one, welcome our smokey ringed overlords.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: bbonyx</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525603</link>
		<dc:creator>bbonyx</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525603</guid>
		<description>@#1 - Wow Tak, I thought for *sure* this one would be a shoe in for another hail canon reference. ;)

&quot;Throw another ziploc of Marlboros in the hail canon&quot;</description>
		<content:encoded><![CDATA[<p>@#1 &#8211; Wow Tak, I thought for *sure* this one would be a shoe in for another hail canon reference. ;)</p>
<p>&#8220;Throw another ziploc of Marlboros in the hail canon&#8221;</p>
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	</item>
	<item>
		<title>By: blackanvil</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525606</link>
		<dc:creator>blackanvil</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525606</guid>
		<description>The park has a roller coaster with a propane-fired volcano, I would guess this is a smoke ring from that ride, since every so often they send out a large plume of fire. In still air, a sudden influx of hot air and smoke could form a smoke ring, and I remember seeing less persistant rings coming off the ride.

Yep, looks like I&#039;m not the only one to think this:
http://www.thecoastercritic.com/2009/06/ufo-over-kings-domininion-volcano.html

--doug</description>
		<content:encoded><![CDATA[<p>The park has a roller coaster with a propane-fired volcano, I would guess this is a smoke ring from that ride, since every so often they send out a large plume of fire. In still air, a sudden influx of hot air and smoke could form a smoke ring, and I remember seeing less persistant rings coming off the ride.</p>
<p>Yep, looks like I&#8217;m not the only one to think this:<br />
<a href="http://www.thecoastercritic.com/2009/06/ufo-over-kings-domininion-volcano.html" rel="nofollow">http://www.thecoastercritic.com/2009/06/ufo-over-kings-domininion-volcano.html</a></p>
<p>&#8211;doug</p>
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	</item>
	<item>
		<title>By: Takuan</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525608</link>
		<dc:creator>Takuan</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525608</guid>
		<description>(should&#039;ve used high resolution in first place), yah, I see the knobbly, smokey texture now. Amazing how stable a vortex ring can be. Didn&#039;t we just have a discussion about dolphin vortex ring bubbles?</description>
		<content:encoded><![CDATA[<p>(should&#8217;ve used high resolution in first place), yah, I see the knobbly, smokey texture now. Amazing how stable a vortex ring can be. Didn&#8217;t we just have a discussion about dolphin vortex ring bubbles?</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Takuan</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525610</link>
		<dc:creator>Takuan</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525610</guid>
		<description>http://www.instructables.com/id/Paper-Cup-Air-Cannon/</description>
		<content:encoded><![CDATA[<p><a href="http://www.instructables.com/id/Paper-Cup-Air-Cannon/" rel="nofollow">http://www.instructables.com/id/Paper-Cup-Air-Cannon/</a></p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Zan</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525619</link>
		<dc:creator>Zan</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525619</guid>
		<description>Any stills or screenshots available for those of us at youtube-challenged workplaces?</description>
		<content:encoded><![CDATA[<p>Any stills or screenshots available for those of us at youtube-challenged workplaces?</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Anonymous</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525622</link>
		<dc:creator>Anonymous</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525622</guid>
		<description>You can see the creation of these smoke rings in action from an individual who was doing this at Burning Man in 2008:  http://www.youtube.com/watch?v=kHpBComsngQ</description>
		<content:encoded><![CDATA[<p>You can see the creation of these smoke rings in action from an individual who was doing this at Burning Man in 2008:  <a href="http://www.youtube.com/watch?v=kHpBComsngQ" rel="nofollow">http://www.youtube.com/watch?v=kHpBComsngQ</a></p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Bill Beaty</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525884</link>
		<dc:creator>Bill Beaty</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525884</guid>
		<description>Ever actually play with smoke rings?   They often look like rigid translucent rings; a sharp-edged image.   If you use black smoke, they look dark grey as in this video.

Depending on how you tap the launcher diaphragm, you can make them move fast, slow, or stop in place.  You *can* make them turbulent like a whirling cloud, but those kind fly apart and don&#039;t last very long.   The clean rings last nearly forever since they&#039;re laminar flows, not turbulent.  (If you encounter a mysterious sky-ring, then it has to be the clean non-smokey kind.)

Mount Etna blowing steam-rings
http://www.youtube.com/watch?v=VbV98Z0QP-k

Blow your own underwater bubble rings
http://www.youtube.com/watch?v=raYdPLnZ2F0

Collision
http://www.youtube.com/watch?v=XJk8ijAUCiI

Smoke ring toy: Mighty Blaster
http://www.youtube.com/watch?v=7LlbiakM7o4
</description>
		<content:encoded><![CDATA[<p>Ever actually play with smoke rings?   They often look like rigid translucent rings; a sharp-edged image.   If you use black smoke, they look dark grey as in this video.</p>
<p>Depending on how you tap the launcher diaphragm, you can make them move fast, slow, or stop in place.  You *can* make them turbulent like a whirling cloud, but those kind fly apart and don&#8217;t last very long.   The clean rings last nearly forever since they&#8217;re laminar flows, not turbulent.  (If you encounter a mysterious sky-ring, then it has to be the clean non-smokey kind.)</p>
<p>Mount Etna blowing steam-rings<br />
<a href="http://www.youtube.com/watch?v=VbV98Z0QP-k" rel="nofollow">http://www.youtube.com/watch?v=VbV98Z0QP-k</a></p>
<p>Blow your own underwater bubble rings<br />
<a href="http://www.youtube.com/watch?v=raYdPLnZ2F0" rel="nofollow">http://www.youtube.com/watch?v=raYdPLnZ2F0</a></p>
<p>Collision<br />
<a href="http://www.youtube.com/watch?v=XJk8ijAUCiI" rel="nofollow">http://www.youtube.com/watch?v=XJk8ijAUCiI</a></p>
<p>Smoke ring toy: Mighty Blaster<br />
<a href="http://www.youtube.com/watch?v=7LlbiakM7o4" rel="nofollow">http://www.youtube.com/watch?v=7LlbiakM7o4</a></p>
]]></content:encoded>
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	<item>
		<title>By: ryuthrowsstuff</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525632</link>
		<dc:creator>ryuthrowsstuff</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525632</guid>
		<description>Did no one read the article linked at the bottom. It points out the volcano ride smoke rings right there. In fact the article also points out that the original you tube comments offer that as the explanation, and note that its a regular occurrence at the park. </description>
		<content:encoded><![CDATA[<p>Did no one read the article linked at the bottom. It points out the volcano ride smoke rings right there. In fact the article also points out that the original you tube comments offer that as the explanation, and note that its a regular occurrence at the park. </p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Anonymous</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525636</link>
		<dc:creator>Anonymous</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525636</guid>
		<description>Long-lasting smoke rings are not hard to make.  We&#039;ve gotten them accidentally while having fun with explosives a few times.  They&#039;re pretty cool, but they&#039;re not otherworldly as some have suggested about this one.</description>
		<content:encoded><![CDATA[<p>Long-lasting smoke rings are not hard to make.  We&#8217;ve gotten them accidentally while having fun with explosives a few times.  They&#8217;re pretty cool, but they&#8217;re not otherworldly as some have suggested about this one.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Anonymous</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525640</link>
		<dc:creator>Anonymous</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525640</guid>
		<description>It IS the smoke ring from Kings Dominion&#039;s coaster Volcano.  I&#039;ve seen it a lot while there.  On clear days they blow away easier but I guess the clouds cap them in temperature wise...  The one I remember most was black and it hovered over the coaster and didn&#039;t move for a minute or so...</description>
		<content:encoded><![CDATA[<p>It IS the smoke ring from Kings Dominion&#8217;s coaster Volcano.  I&#8217;ve seen it a lot while there.  On clear days they blow away easier but I guess the clouds cap them in temperature wise&#8230;  The one I remember most was black and it hovered over the coaster and didn&#8217;t move for a minute or so&#8230;</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Takuan</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525646</link>
		<dc:creator>Takuan</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525646</guid>
		<description>a good example of how &quot;UFO&quot; photographs are subject to ambiguous interpretation. I imagine they haul out all the oldest images and sieve them through the latest software and enhancement tech every now and then - still no Martians, dammit.</description>
		<content:encoded><![CDATA[<p>a good example of how &#8220;UFO&#8221; photographs are subject to ambiguous interpretation. I imagine they haul out all the oldest images and sieve them through the latest software and enhancement tech every now and then &#8211; still no Martians, dammit.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Anonymous</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525902</link>
		<dc:creator>Anonymous</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525902</guid>
		<description>Halo? Master Chief? Maybe? Perhaps?</description>
		<content:encoded><![CDATA[<p>Halo? Master Chief? Maybe? Perhaps?</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: chrisrosa</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525650</link>
		<dc:creator>chrisrosa</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525650</guid>
		<description>Those familiar with the Burning of The Man, will know these things aren&#039;t so unidentifiable.

http://bit.ly/uQOrv</description>
		<content:encoded><![CDATA[<p>Those familiar with the Burning of The Man, will know these things aren&#8217;t so unidentifiable.</p>
<p><a href="http://bit.ly/uQOrv" rel="nofollow">http://bit.ly/uQOrv</a></p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Steve Schnier</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525658</link>
		<dc:creator>Steve Schnier</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525658</guid>
		<description>I for one, welcome our new Smoke-Ring UFO Overlords!</description>
		<content:encoded><![CDATA[<p>I for one, welcome our new Smoke-Ring UFO Overlords!</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: pupdog</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525667</link>
		<dc:creator>pupdog</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525667</guid>
		<description>Obviously, someone was trying to pull off a &lt;a href=&quot;http://en.wikipedia.org/wiki/The_First_Duty&quot;&gt;Kolvoord Starburst&lt;a&gt;&lt;/a&gt;&lt;/a&gt;</description>
		<content:encoded><![CDATA[<p>Obviously, someone was trying to pull off a <a href="http://en.wikipedia.org/wiki/The_First_Duty">Kolvoord Starburst</a><a></a></p>
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	</item>
	<item>
		<title>By: Anonymous</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-575843</link>
		<dc:creator>Anonymous</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-575843</guid>
		<description>July 28, 2009 - Six Flags Great Adventure Amusement Park, Jackson, NJ. Same type of ring spotted between 6 and 6:30pm by large group of people by the Kingda-Ka roller coaster. Never lost its shape as it drifted northwest. And there is no Volcano attraction at this park!</description>
		<content:encoded><![CDATA[<p>July 28, 2009 &#8211; Six Flags Great Adventure Amusement Park, Jackson, NJ. Same type of ring spotted between 6 and 6:30pm by large group of people by the Kingda-Ka roller coaster. Never lost its shape as it drifted northwest. And there is no Volcano attraction at this park!</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Takuan</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525671</link>
		<dc:creator>Takuan</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525671</guid>
		<description>mmm vortex rings... in ferro-magnetic fluid?</description>
		<content:encoded><![CDATA[<p>mmm vortex rings&#8230; in ferro-magnetic fluid?</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: jawsy</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525936</link>
		<dc:creator>jawsy</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525936</guid>
		<description>I guess they didn&#039;t hear about Obama&#039;s anti-smoking bill. </description>
		<content:encoded><![CDATA[<p>I guess they didn&#8217;t hear about Obama&#8217;s anti-smoking bill. </p>
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	</item>
	<item>
		<title>By: Takuan</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525939</link>
		<dc:creator>Takuan</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525939</guid>
		<description>what kind of vortex ring dynamics would you get from a flock of autonomous robot insect&#039;s wing-force interaction?  Birds fly in &quot;V&quot; formation to maximize energy efficiency for the flock, why don&#039;t they fly in toroids? I&#039;ve never seen fish in toroidal school either. The advantage seems to be stability in a fluid medium, surely there was an evolutionary use for that somewhere?</description>
		<content:encoded><![CDATA[<p>what kind of vortex ring dynamics would you get from a flock of autonomous robot insect&#8217;s wing-force interaction?  Birds fly in &#8220;V&#8221; formation to maximize energy efficiency for the flock, why don&#8217;t they fly in toroids? I&#8217;ve never seen fish in toroidal school either. The advantage seems to be stability in a fluid medium, surely there was an evolutionary use for that somewhere?</p>
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	</item>
	<item>
		<title>By: zikman</title>
		<link>http://boingboing.net/2009/06/24/giant-smoke-ring-hov.html#comment-525687</link>
		<dc:creator>zikman</dc:creator>
		<pubDate>Wed, 30 Nov -0001 00:00:00 +0000</pubDate>
		<guid isPermaLink="false">#comment-525687</guid>
		<description>hey I used to work there. for two weeks.</description>
		<content:encoded><![CDATA[<p>hey I used to work there. for two weeks.</p>
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