(1) Nancy MacLeod / Flickr (2) Moodboard / Corbis (3) Courtesy of Ingunn Markiewicz / Flickr (4) Larry Williams / Corbis Edge (5) Nancy MacLeod / Flickr (6) Michael Krabs / Imagebroker (7) Ivan Mayes /
iStock (8) Scott Spychalski / Flickr (9) Jupiter Unlimited / WebMD (10) Jeffery L. Jaquish / Flickr (11) Pam Francis /
Photographer's Choice (12) Salih Guler /
iStock (13) Leland Bobbe / Photonica (14) George Peters /
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