Bill McKibben is a journalist and activist who founded the environmental organisation 350.org. The author of fifteen books, including the bestsellers The End of Nature, Eaarth and Deep Economy, he is the Schumann Distinguished Scholar in Environmental Studies at Middlebury College and the winner of the Gandhi Prize, the Thomas Merton Prize and the Right Livelihood Prize. He lives in Vermont.

Stevie Lewis spent four years working in animation and now creates art and illustrates children's books, including Sun! One in a Billion, written by Stacy McAnulty, and Lost in the Library, written by Josh Funk.

Stevie lives on the road, furthering her passion for climbing, art, and the outdoors. She gathers inspiration from a variety of places, be it climbing in the high desert in central Oregon, hiking in the wilderness of Alaska, or sharing laughs with fellow travelers around a campfire.