<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/7dc198e2-7197-4ede-83ae-8e2b12c53572/1B110257-205D-49B7-80A3-0E25E22F88C4/" 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.nature.com/" href="http://www.nature.com/" style="font-size: 11px;">www.nature.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nature.com/"><DIV class="login-nav"> <UL class="list"> <LI class="us-link li1"><A href="http://www.nature.com/nams/svc/myaccount">My account</A></LI> <LI class="us-link li2"><A title="Submit your manuscript" href="http://www.nature.com/authors/submit_manuscript.html">Submit Manuscript</A></LI> <LI class="us-link li3"><A title="Register with Nature.com" href="http://www.nature.com/register">Register</A></LI> <LI class="us-link li4"><A title="Subscribe to nature.com" href="https://secure.nature.com/subscribe/nature">Subscribe</A></LI> </UL> <DIV class="logon links-above"> <P><A title="login to Nature.com" class="login" href="http://www.nature.com/foxtrot/svc/login">Login</A></p> </DIV> <IMG class="journal-header-image" alt="nature.com homepage" src="http://www.nature.com/images/home_03/journal_header_v3.gif" /> <FORM method="get" action="http://www.nature.com/search/executeSearch?" class="search"> <DIV> <LABEL for="searchtext">Search</LABEL> <INPUT type="text" value="" name="sp-q" id="searchtext" /> <INPUT type="hidden" value="sp1001702d" name="sp-a" /> <INPUT type="hidden" value="subject|ujournal" name="sp-sfvl-field" /> <INPUT type="hidden" value="ujournal" name="sp-x-1" /> <INPUT type="hidden" value="phrase" name="sp-p-1" /> <INPUT type="submit" title="search now" value="go" class="button" name="submit" /> <A href="http://www.nature.com/search/adv_search?sp_a=sp1001702d&sp_t=advanced&sp_x_1=ujournal&sp-p=all&sp">Advanced search</A> </DIV> </FORM> <SPAN class="cleardiv"></SPAN> </DIV></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.nature.com/"><H3> <A href="http://www.nature.com/nature/journal/v458/n7234/full/458040a.html"> <SPAN><IMG alt="Astrophysics: Capturing black-hole pairs" src="http://www.nature.com/images/home_03/main_news_pic2009_03_05.jpg" /><CITE class="pic-credit"><I>P. Marenfeld, NOAO</I></CITE></SPAN>Astrophysics: Capturing black-hole pairs</A></H3></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.nature.com/"><UL class="plain"> <li style="margin-left:16px;padding-left: 0px;"><A href="http://www.nature.com/news/2009/090304/full/news.2009.138.html">FDA-approved warning labels won't protect companies</A></LI> <li style="margin-left:16px;padding-left: 0px;"><A href="http://www.nature.com/news/2009/090304/full/news.2009.134.html">Peering at proteins inside cells</A></LI> <li style="margin-left:16px;padding-left: 0px;"><A href="http://www.nature.com/news/2009/090304/full/news.2009.135.html">Microbicide protects monkeys from HIV-like virus</A></LI> </UL></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/1B110257-205D-49B7-80A3-0E25E22F88C4/blog/" title="blog or email this clip"><img src="http://content8.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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