The Arboretum Grounds and Buildings will close at noon on Saturday, October 23 to the general public when the Arboretum turns into a beer garden for Oktoberfest! Join us!

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23.4 Degrees and Falling

It's not the temperature, as they say: it's the obliquity. And yet, the connection with winter weather and decreasing temperatures is very real.

At this point, you may be wondering what on Earth I am writing about, and in fact, you would be very close to answering your own question. Our planet Earth is tilted, or rather, the Earth's axis of rotation is tilted with respect to the ecliptic, and the degree of tilt is referred to as obliquity. If you're wondering what that means, it means ...

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