Photo of the Day

Picture of a snorkeler in a bright blue pool of water surrounded by bright green grass in Mexico's Chihuahuan Desert
July 13, 2022

Cuatro Ciénegas

A snorkeler looks for aquatic life in a spring-fed pool in a protected reserve called Cuatro Ciénegas, within Mexico's Chihuahuan desert. When this photo was published in the October 1995 issue, the writer reported that 60 species of plants and wildlife were unique to the region. Today, that number is upwards of 150.
Photograph by George Grall, Nat Geo Image Collection

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