On the fourth of July this year, I went underground -- under the Chihuahuan Desert, that is, and into the famous Carlsbad Caverns. Carlsbad Caverns National Park in southern New Mexico has been hosting tourists for the better part of a century, so it's got a lot of experience with showing itself off. The fabulous limestone decorations are subtly lit (a Hollywood lighting expert helped out with the placement of the bulbs), the paths are paved and protected by handrails, and large-capacity elevators whisk you up to the daylight. Carlsbad Caverns. Photo: NPS. It wasn't until a guide took a …
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Award-winning journalist and pretty good mom Michelle Nijhuis writes about science and the environment from western Colorado. Follow her on Twitter.