Over the Fourth of July holiday we took our two youngest on a quick trip to San Diego.

While our main goal was Legoland, dream world for all elementary aged boys, we were able to sneak in a couple hours at the Zoo.

Sure, we got a kick out of the new Elephant Odyssey with up close and personal access to all 20 inhabitants, and yes, Otis, the resident Hippo was suave and debonair,  but I think the exhibit I enjoyed the most was an artful display devoted to conservation.

Tucked in along the pedestrian walkway headed towards the elephants, three towering sculptures rose above the sidewalk.  Carved out of the metal uprights were silhouettes of various components to living life in harmony with our fragile planet.

Each of the towers is accompanied by a plaque with simple suggestions for ways to reduce energy and water use and to encourage recycling.

It is an artful way to promote a green message. I’ve heard it said that humans need to hear things seven times before the message starts to sink in.

I’d gladly take in this message at least 7 times at the San Diego Zoo, especially if it means more time spent gawking at the koalas.

And here is another message: Our 4 round trips between New Hampshire and San Diego generated 6,100 pounds of carbon dioxide. We purchased carbon offsets from Terrapass.com for $41.63, which is less than breakfast for four in our hotel