A study highlighted by the University of Arizona reveals that Earth could harbor twice as many vertebrate species as scientists…
When an Arizona property owner noticed distinct impressions preserved in stone, the discovery opened a direct link to creatures that…
Every February, people across the world turn yards, balconies, parks, and sidewalks into observation posts. The Great Backyard Bird Count…
In 1991, two hikers found a body emerging from an Alpine glacier. The discovery first looked like a modern accident—and…
In 1974, farmers near Xi’an broke through fragments of clay while digging a well. What emerged was one of archaeology’s…
In 1939, an amateur archaeologist opened a Suffolk burial mound and found a ship, royal treasures, and a new way…
In 1964, Arno Penzias and Robert Wilson found a faint, stubborn microwave signal in the sky. Their careful investigation helped…
In 1940, four teenagers and a dog followed a hole in the French countryside and uncovered one of humanity’s most…
Found near the Dead Sea in 1947, the scrolls transformed the study of Judaism, the Hebrew Bible, and life in…
Found by soldiers near Egypt’s Mediterranean coast in 1799, the Rosetta Stone gave scholars the comparisons they needed to read…
When Howard Carter entered KV62 in 1922, he found more than a royal burial. The tomb’s extraordinary contents gave modern…
In 1928, an overlooked patch of mold revealed a substance that bacteria could not withstand. Turning that observation into a…
Recovered from a Roman-era shipwreck, the Antikythera Mechanism showed that ancient Greek engineers could build a compact device to track…
A slow-moving reptile with a powerful bite helped scientists uncover a molecule that became the basis of an important diabetes…
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…