<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/bcb352d6-73f6-472f-abd6-6ea0d0f576ce/6A825007-83CC-4D5B-B20C-625AF816757E/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.newscientist.com/article/dn17333-leafing-las-vegas-health-dangers-of-city-plants-revealed.html?DCMP=OTC-rss&nsref=health" href="http://www.newscientist.com/article/dn17333-leafing-las-vegas-health-dangers-of-city-plants-revealed.html?DCMP=OTC-rss&nsref=health" style="font-size: 11px;">www.newscientist.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newscientist.com/article/dn17333-leafing-las-vegas-health-dangers-of-city-plants-revealed.html?DCMP=OTC-rss&nsref=health"><P class="infuse">Tree-lined avenues and flower-filled central reservations are pretty, but they could be damaging your health. A new study shows that some plants can increase the rate of ozone production by up to 50 times.</p> <P class="infuse">Certain plants, such as rosemary, juniper and pine trees, emit chemical compounds known as terpenes, thought to help deter insect predators, or protect the plant from other stresses like high temperatures.</p> <P class="infuse">However, when terpenes mix with pollutants (particularly nitrogen oxides from industry and traffic) they react to produce ozone – a key ingredient of photochemical smogs, and a health hazard that can <A href="http://www.newscientist.com/article/mg14619790.300-ozone-alert-follows-cancer-warning.html">cause breathing difficulties and may cause cancer</A>.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newscientist.com/article/dn17333-leafing-las-vegas-health-dangers-of-city-plants-revealed.html?DCMP=OTC-rss&nsref=health"> ozone levels exceeded the US <A target="ns" href="http://www.epa.gov/">Environmental Protection Agency</A> safe standard (an average of 75 parts per billion over an eight-hour period) and in the worst case reached 107ppb.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newscientist.com/article/dn17333-leafing-las-vegas-health-dangers-of-city-plants-revealed.html?DCMP=OTC-rss&nsref=health">Some plant species are very low emitters. <A target="ns" href="http://www.csiro.au/resources/pfp2.html">Shoestring acacia</A> is a great plant: low water use and low terpene emissions</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/6A825007-83CC-4D5B-B20C-625AF816757E/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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