by Raffi, Ashley Wolff
by Catherine D. Hughes, National Geographic Kids
by Joe Ehrmann, Paula Ehrmann, Gregory Jordan
by Melissa Stewart, National Geographic Kids
by Joyce Milton, Alton Langford
by Sharon Bokoske, Richard Courtney, Richard Courtney
by Katherine Boo
by Shirley Raye Redmond, Bryn Barnard
by Bonnie Worth, Aristides Ruiz, Joe Mathieu
by Nicola Davies, Nick Maland
by Tedd Arnold
by Andy Craig, Dave Yewman
by Joanna Cole, Bruce Degen
by Yuval Zommer, Barbara Taylor
by Sarah L. Thomson, Wildlife Conservation Society
by Gail Gibbons, Gail Gibbons
by Jerry Pallotta, Rob Bolster
by Bethanie Hestermann, Josh Hestermann
by Robert D. Blackwill, Jennifer M. Harris
by Brian Skerry, Brian Skerry
by Kathleen Weidner Zoehfeld, Helen K. Davie
by Sam Hume
by Dan Kainen, Carol Kaufmann
by Christina Wilsdon, National Geographic Kids
by Adam Hamilton
by Shelley Gill, Erik Brooks
by Chris Kratt, Martin Kratt