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Melissa Sevigny/KNAUThat unmistakable smell after rain has a name: petrichor. It's been signaling the arrival of rain for millions of years. -
Daniel Polin/Creative CommonsMagpies have earned a bad rap as the bully in the birdyard — some even call them the birds everyone loves to hate. But the often-misunderstood magpie may deserve a little more credit than they get.
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A project below Glen Canyon Dam is targeting invasive smallmouth bass that threaten native fish in the Colorado River. -
The Bradford pear was one of the most widely planted ornamental trees in North America. But it's now largely considered invasive and outlawed in several states. -
High summer temperatures make Flagstaff’s thin air feel even thinner. Density altitude affects your body, turning a simple mountain hike into a tough physical workout. -
The San Francisco Peaks volcanic system includes some tiny residents — small, rare plants that grow in difficult terrain. Citizen scientists are trying to document them. -
Have you ever noticed a large, fuzzy, brightly-colored ant moving rapidly along the ground? Commonly called velvet ants, these aren’t ants at all. They’re actually wingless wasps. -
Three decades ago, the use of cloud seeding to enhance precipitation over the region was tested as part of a large field experiment. -
Paleontologists exploring the Zuni Basin of western New Mexico in the 1990s uncovered a turtle fossil shell that was later determined to be an entirely new species. -
Quicksand can form in rivers and washes across the Colorado Plateau. Conditions beneath the surface can create unstable ground and potential hazards. -
Prairie dogs, squirrels and even the family dog exhibit a behavior called “splooting" to help regulate body temperature. -
Jaguars are usually associated with the tropics of Central and South America, but historical records show they once prowled as far north as the South Rim of Grand Canyon.
