Every Breath You Take

How visitation is affecting the air quality in Carlsbad Cavern

Carbon dioxide is a naturally occurring gas in Earth’s atmosphere, but in high concentrations, the gas can act as an asphyxiant. OSHA and other government agencies recommend a 5,000 parts …

Phenology with Friends

We’re walking on, as Mely puts it, the world’s shortest hike. Mely, the Latino Heritage intern at the park, and is just up ahead of me on a drainage in Saguaro’s Tucson Mountain District. Resting across her shoulders is a …

Hello, Karly!

Meet Saguaro’s Geoscientists in the Parks intern, Karly Chin! She hails from Redding, California, and was already an environmentalist and biologist before working in the park. She previously researched environmental change and infectious diseases at the Hopkins Marine Station in …

Desert Frogs

We met at 5 A.M., and have been hiking since 6, scrabbling up Madrona Canyon’s rocky drainages. Madrona Canyon is in the park’s Rincon Mountain District, which has a higher elevation (Mica Mountain, at 8,664 ft., is the highest point) …

World Jamboree

When we first got to the entrance of the Jamboree, all I could think was: “I would never in my life want to be the person in charge of organizing all this.” Picture about 45,000 Boy Scouts and Girl Scouts, …