The OSTB list now includes a wider range of books than ever before. NSTA says: "Our vision of what we call science has broadened. The practices we use to explore the natural world and to create new products now include mathematics and engineering. We also recognize the importance of the arts, history, and human perspectives in these explorations. Science is not just one “way of knowing,” but many."
Here is a link to the list and the entry for A Warmer World:
http://www.nsta.org/publications/ostb/ostb2013.aspx?print=trueA Warmer World. Caroline Arnold. Charlesbridge.Beautiful book with two levels: story line and facts about an important current issue and its effect on animals.