http://www.helium.com/knowledge/202174-why-the-leaves-on-trees-turn-upside-down-before-a-storm.xml Helium.com > Atmosphere & Weather > why the leaves on trees turn upside down before a storm en-us Copyright Helium.com Wed, 17 Dec 2008 16:53:39 GMT Wed, 17 Dec 2008 16:53:39 GMT