San Francisco Peaks

Kevin Dahl/National Parks and Conservation Association

Helium is the second most abundant element in the universe. But here on Earth it’s in much shorter supply. As demand has increased, companies have aggressively ramped up helium exploration in the U.S.—including northern Arizona.

The Museum fire north of Flagstaff had grown up to 1800 acres as of Monday night.

Authorities say about two dozen homes are under an evacuation order and thousands of people have been told to prepare to leave the area.  They have been encouraged to pack supplies for three days.

A little rain fell at the fire scene Monday and weather forecasters say more rain is expected in the area later today, but there also could be some gusty winds and that could shift the direction of the blaze.

Arizona Snowbowl twitter feed

A northern Arizona ski resort wants to expand services with night skiing and tubing, new chairlifts and mountain biking trails, and a zip line.

Melissa Sevigny

Sending kids to Camp Colton at the base of the San Francisco Peaks has been a local tradition since the seventies. Thousands of sixth grade students have learned about science and nature there. But this spring there’s a new curriculum focused on forest health and wildfire prevention. KNAU’s Melissa Sevigny spoke about it with Ari Wilder, the executive director of Friends of Camp Colton.

U.S. Forest Service

The San Francisco Volcanic Field in northern Arizona is full of spiky lava flows. Some seem as fresh as if they were laid down yesterday. But how old are they, really? Scientists are now dating these ancient volcanic eruptions with a method that involves a curious kind of clock—the cosmic rays emitted by stars.