Stretching from Mexico to Utah, the Arizona Trail turns the state’s deserts, forests, canyons, and plateaus into one continuous public…
Across eastern Arizona, fossilized trees, painted hills, ancient villages, and a vanished highway come together in a national park that…
In southeastern Arizona, the San Pedro River remains one of the Southwest’s rare free-flowing desert rivers—a protected corridor where cottonwoods,…
In the Sonoran Desert, the saguaro is more than a cactus. It is shelter, food, landmark, cultural inheritance, and a…
On California’s Channel Islands, a conservation effort combining captive breeding, disease prevention, and ecosystem repair helped rescue a distinctive fox…
For more than five decades, Landsat satellites have quietly photographed the changing planet—helping communities understand forests, farms, coastlines, cities, and…
NASA’s Europa Clipper is on a long journey to Jupiter, where it will study one of the solar system’s most…
Once pushed toward disappearance in the lower 48 states, the bald eagle has become one of the clearest conservation successes…
Long before smartphones put powerful computers in every pocket, a compact machine with just a few kilobytes of memory helped…
From newborn stars hidden in dust to galaxies from the universe’s earliest era, the James Webb Space Telescope is revealing…
Once one of the defining trees of eastern North America, the American chestnut was nearly erased by an introduced fungus.…
After more than a century of obstruction, one of America’s largest river-restoration efforts is reconnecting the Klamath River with hundreds…