Well, I don't know that it really qualifies as "art" or even earth related. But over the recent months I have really found myself focused on suburban wildlife, and watching its change through spring into summer. And also watching as our local development (and sudden stall in development) are impacting it. The intersection of people and animals that semi-thrive among us is an area of "wildlife photography" that appeals to me.
So here's one of the photos that has resulted. A burrowing owl who lives within feet of a major road that I walk along in the morning on the way to the BART station (many of you will already have seen these and others on my LJ):

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click to see a larger version)
I also like this ground squirrel that lives in a burrow just a few feet away from the owl. I had to frame it with the squirell about 15% to the right of where I'd prefer but that was out of my control because of a post that would enter the frame inelegantly):

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click for larger version)