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The Dilophosaurus is probably the best-known dinosaur whose fossil remains have been found in Arizona. That’s because the movie "Jurassic Park” made it famous — or at least a version of it.
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What does a flower look like to a hummingbird? New research says it’s probably nothing like what humans perceive because hummingbirds can spot ordinary colors blended with ultraviolet light.
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The Species from Feces Lab at Northern Arizona University examines DNA in animal feces. The lab’s motto is "to be number one at number two.”
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Fewer than 2% of North America’s bark beetle species attack trees, but those that do have killed billions of conifers across the West over the last 30 years.
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All kinds of animals use conspicuous colors. Research from biologists at the University of Arizona found it's a quirk of evolution that started around 150 million years ago.
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The Mojave Trail was initially used by Indigenous tribes for trade and travel but later became a critical route for Spanish missionaries, American settlers and military expeditions.
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Though distinct disciplines, both paleontology and archaeology use similar technologies and methods in their work and show fascinating intersections.
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Spring mounds are found in arid regions worldwide where geological formations force groundwater to the surface. In the U.S., the feature is especially common in the mineral-rich soils of the Great Basin and Mojave Deserts.
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Arizona is home to over 1,000 volcanoes and has three active volcanic fields, the largest of which is the San Francisco Volcanic Field near Flagstaff.
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Waking on winter solstice to a hushed world of bright light, we look outside and see fresh-fallen snow.
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The original Christmas Bird Count involved 27 birders, who tallied up 90 species on Christmas Day. More than a century later, the survey continues in what may be the world’s longest-running community science project.
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The Relict Leopard Frog was once found in wetlands throughout northwest Arizona, southeast Nevada and southwest Utah. It was thought extinct until isolated populations were found in Nevada in 1991.