2005
Eleanor Cameron Award for Middle Grades: Supernaturalist by Eoin Colfer
Hal Clement Award for Young Adults: Balance of Trade by Sharon Lee and Steve Miller
Picture Book: Science Verse by Jon Scieszka. Illustrated by Lane Smith

2004
Eleanor Cameron Award for Middle Grades: Peterson Escape from Memory by Mararet Haddix
Hal Clement Award for Young Adults: Gunpowder Empire  by Harry Turtledove
Picture Book: Hazel Nutt: Mad Scientist by David Elliot

2003
(Special Award) Best Science and Technology Education - Julie Czernada for the Tales of the Wonderzone (Entire Series)
Eleanor Cameron Award for Middle Grades: Andrew Lost by J.C. Greenburg (Entire series)
Hal Clement Award for Young Adults: Feed by M.T. Anderson
Picture Book: Star Wars Episode II Attack of the Clones -- Incredible Cross-Sections by Curtis J. Saxton. Illustrated by Hans Jenssen and Richard Chasemore

2002
Eleanor Cameron Award for Middle Grades: Beatnik Rutabagas From Beyond the Stars by Quentin Dodd
Hal Clement Award for Young Adults: Jumping off the Planet by David Gerrold
Picture Book: Boloney by Jon Scieszka. Illustrated by Lane Smith

2001
Eleanor Cameron Award for Middle Grades: The Power of UN by Nancy Etchemendy
Hal Clement Award for Young Adults: This Side of Paradise by Steven Layne
Picture Book: Rex #1 by Robert Gould & Kathleen Duey. Illustrated by Eugene Epstein

2000
(Special Award) Promotion of Reading - J.K. Rowling for the Harry Potter series
Eleanor Cameron Award for Middle Grades: I was a 6th Grade Alien by Bruce Coville
Hal Clement Award for Young Adults: The Game of Worlds by Roger MacBride
Picture Book: Hush, Little Alien by Daniel Kirk (author and illustrator)

1999
(Special Award) Australian Contribution to Children's Science Fiction - Garth Nix
Eleanor Cameron Award for Middle Grades: Young Jedi Knights by Kevin Anderson and Rebecca Moesta (Entire series)
Hal Clement Award for Young Adults: Alien Dreams by Larry Segriff
Picture Book: Noah and the Space Ark by Laura Cecil. Illustrated by Emma Chichester Clark

1998
Eleanor Cameron Award for Middle Grades: Mike Gonzo and the UFO Terror by Bill Crider
Hal Clement Award for Young Adults: Dark Side of Nowhere by Neal Shusterman
Picture Book: Floating Home by Michael Rex

1997
(Special Award) Strong Female Characters - Kipton and the Tower of Time by Charles L. Fontenay
Eleanor Cameron Award for Middle Grades: The Message by K.A. Applegate
Hal Clement Award for Young Adults: Wildside by Steven Gould
Picture Book: Grandpa Takes Me to the Moon by Timothy R. Gaffney. Illustrated by Barry Root

1996
Eleanor Cameron Award for Middle Grades: Star Hatchling by Margaret Bechard
Hal Clement Award for Young Adults: Winds of Mars by H.M. Hoover and M Night Room by Em Goldman (Tie)
Picture Book: Insects from Outer Space by V. Vagin and F. Asch. Illustrated by Vladimir Vagin

1995
Eleanor Cameron Award for Middle Grades: Shape Changer by Bill Brittain
Hal Clement Award for Young Adults: The Ear the Eye & the Arm by Nancy Farmer
Picture Book: Time Flies by Eric Rohmann (author and illustrator)

1994
Eleanor Cameron Award for Middle Grades: Worf's First Adventure by Peter David
Hal Clement Award for Young Adults: The Giver by Lois Lowry
Picture Book: Richie's Rocket by Joan Anderson. Photographed by George Anacona

1993
Eleanor Cameron Award for Middle Grades: Weirdos of the Universe Unite! by Pamela Service
Hal Clement Award for Young Adults: River Rats by Caroline Stevermer
Picture Book: June 29, 1999 by David Weisner

1992
Eleanor Cameron Award for Middle Grades: My Teacher Glows in the Dark by Bruce Coville
Hal Clement Award for Young Adults: Invitation to the Game by Monica Hughes
Picture Book: Time Train by Paul Fleishman. Illustrations by Claire Ewart