My advisor and I take our Aquatic Entomology students on two 3-day camping trips, one in southern Arizona and one in northern Arizona.  The latter often involves snow or freezing rains, miserably cold nights, and roaring campfires.  Sometimes it’s warm during the day, but other times it’s more like this:

Brrr...

Granted, a lot of Arizonans break out the parkas when it gets below 55 degrees, but it was genuinely cold on this particular trip!

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