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<p class=MsoNormal><i>Nature </i><b>509</b>, 262<o:p></o:p></p>
<p class=MsoNormal>(15 May 2014)<o:p></o:p></p>
<p class=MsoNormal>doi:10.1038/509262c<o:p></o:p></p>
<h1 style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:15.0pt;
margin-left:0in'><span style='font-size:22.0pt;color:#222222;letter-spacing:
-.4pt;font-weight:normal'><o:p> </o:p></span></h1>
<h1 style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:15.0pt;
margin-left:0in'><span style='font-size:22.0pt;color:#222222;letter-spacing:
-.4pt;font-weight:normal'>How El Niño slows the planet's spin<o:p></o:p></span></h1>
<p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:15.0pt;
margin-left:0in'>The El Niño Pacific weather event affects how long the day is,
but two types of El Niño do this in two different ways.<o:p></o:p></p>
<p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:15.0pt;
margin-left:0in'>Weather changes affect the planet's rotation speed, and thus
day length, by changing the atmosphere's pressure over topographical features.
A team led by Olivier de Viron, now…<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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