Copper: The Miracle Metal

Copper: The Miracle Metal

Tucson, Ariz. – I became interested in exploring copper mining in Arizona when I saw several photographs of the Tucson skyline from the 1940s. The images showed a smoky haze hanging in the sky, completely obscuring the view of the Santa Catalina and Rincon...
Making Mirrors

Making Mirrors

Tucson, Ariz. – A recipe for how to make a 8.4-meter telescope mirror: Ingredient: About 44,000 pounds of glass chunks. Instructions: Load all glass chunks into 27-foot diameter mold. Place mold in giant spinning oven and set for 5 revolutions-per-minute. Cook...
Learning to Manage Wildfire

Learning to Manage Wildfire

Tucson, Ariz. – Every year, in early spring, a small group of people meet in Tucson to set major wildfires. Nothing actually burns. The fires are hypothetical, staged ‘incidents,’ as they’re called, and fought entirely by computer and on paper...
The Disappearing Night Sky

The Disappearing Night Sky

Ian Cheney remembers when he first became interested in dark skies. He’d just moved from rural Maine to New York City, and was amazed at how little of the night sky was visible. In Maine, he could see celestial details such as stars, planets, and the vast Milky...
Geologists Learning More About Arizona Earthquakes

Geologists Learning More About Arizona Earthquakes

More earthquakes are being detected in Arizona than ever before. That’s because, according to geologists, a statewide network of sensors is recording the most accurate seismological data in the state’s history. They even measure the smallest of quakes, the...

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