Photo of the Day

Close view of a horse’s eye
October 24, 2011

Horse, California

This Month in Photo of the Day: Photos From New National Geographic Books

In the blink of this horse’s eye, the blue sky becomes a counterpoint to its stare. Early horses arose in North America some five million years ago, only to die out and be introduced, in domesticated form, by Spanish conquistador Hernán Cortés in 1519.

(From the National Geographic book Visions of Earth)

Buy the book Visions of Earth »
See more pictures in our monthly Visions of Earth feature »
See more travel pictures »

Photograph by Roxi Mueller, My Shot

Go Further

Subscriber Exclusive Content

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history