Science and Technology

Don Davis/NASA

Scientists are dismissing a popular theory about mass extinction since the last ice age. The Younger Dryas Impact Hypothesis contends an asteroid hit Earth 13,000 years ago changing the climate instantly and dramatically. Scott Anderson, a paleoecologist at Northern Arizona University, is part of an international research team that looked for evidence to support this explanation, but didn't find any.


Getty Images

Bach and Mozart have one. ZZ Top has one. And of course all of The Beatles have them. They are asteroids.


Earth Notes: Drones in the Woods

Dec 28, 2016
Michele James

An exciting tool is providing a new way to better determine the effectiveness of restoration projects in northern Arizona forests. 


U.S. Fish and Wildlife Service

More than 170 different kinds of bees are pollinating plants in Arizona’s high elevation forests. Flagstaff ecologist Lindsie McCabe wants to know what will happen to them as global temperatures warm. She’s conducting experiments with bees on the San Francisco Peaks, simulating the impact of climate change on native pollinators.


Justin Regan

Off the top of your head, can you name the four spheres of Earth? If it’s not coming to you easily, a group of Flagstaff 5th graders can help. The students at Killip Elementary School are studying Earth’s biosphere, geosphere, atmosphere and hydrosphere. Its’ part of a special STEM program to help kids apply real world observations to their school work. On a recent trip to Lake Mary, they worked with scientists and field experts to see Earth’s spheres in action. Arizona Public Radio’s Justin Regan has this audio postcard. 


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