Amazing! The World's Second-Largest Known Tree: 3,200 Years Old, 247 Feet Tall, Has 2 Billion Leaves!

<p>See more: The world's second-largest known tree, the President, in Sequoia National Park is photographed by National Geographic magazine photographer Michael "Nick" Nichols for the December 2012 issue. The final photograph is a mosaic of 126 images. More video can be seen in the magazine's digital editions on iPad, iPhone, and Kindle Fire. To see Nick's photos, go to</p>