-
It’s International Dark Sky Week, a worldwide celebration that was started in 2003 to raise awareness about light pollution. This year is the first time it’s come to Flagstaff.
-
Footprints made tens of thousands of years ago may look like they’ve been erased by time and weather, but — like invisible ink — they can sometimes reappear under the right conditions.
-
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.
-
Every spring, three species of nectar-feeding bats travel several hundred miles from Mexico into Arizona, New Mexico and Texas to reach maternity roosts where they rear their young.
-
In the summer of 2023, what seemed like tiny aliens turned up at the Wupatki National Monument. A visitor told park staff that tadpoles were wriggling about in a pool of standing water that had flooded the Ancestral Puebloan ballcourt.
-
Marine reptiles called Ichthyosaurs existed millions of years ago within a vast ocean that surrounded the supercontinent known as Pangea. They had streamlined bodies adapted for swift movement in aquatic environments.
-
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.”
-
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.
-
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.
-
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.
-
Though distinct disciplines, both paleontology and archaeology use similar technologies and methods in their work and show fascinating intersections.
-
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.