(For more pictures of the amazing colors of our world, buy the National Geographic book Life in Color.) ...

Travel the world with National Geographic Expeditions and discover unparalleled access to the people and cultures of every destination you visit—from the edge of the Arctic to the Antarctic ...

This story appears in the September 2015 issue of National Geographic magazine ... noted as far back as Aristotle: color-changing skin. It’s a popular myth that chameleons take on the color ...