Around the Fourth of July, Jordan Crane was hiking in the woods with his wife, Rebecca, when she exclaimed, “Interdependence Day!” Her idea was for a holiday like Independence Day, with parades and fireworks, a way to celebrate all the ways we are connected to one another and to the planet. Dazzled by the thought, Jordan decided to make a comic about it. He worked for many months trying to get it right. Rebecca told him, “It’s not a new idea. It’s something that people know. Just be clear, and draw it as you see it.” So he drew it all over again, and at last it was done—the book you now hold in your hands.