The words in the title above came from Pogo, and they have bounced around in the back of my brain since the 1970s when I first heard them. Many times I’ve been confronted with the truth of that quip by Pogo, the beloved character of former Disney cartoonist Walt Kelly (1913-1973), in a poster he created for the first Earth Day in 1970. No affirmation was more emphatic than an experience Mary and I shared in Canada recently.

This Earth Day, just two days after the third anniversary of BP’s fatal Deepwater Horizon oil disaster, we did something not very mindful of our Earth. We boarded a jumbo jet with a few hundred other people, who may or may not have realized it was Earth