The President, the third largest tree on earth. The President, Sequoia National Park is 3200 years old. "The President" is the second most massive tree ever measured: it's 27 feet wide at the bottom and 247 feet tall.
This image shows sulfosalicylic acid crystal formation as seen magnified 200 times using polarized light. The photo was taken by Thomas Balla of Fort Collins, Colo., and received honorable mention at Nikon's 2013 Small World microphotography competition.