Geoffrey T. Williams has 5 audiobooks on Listento.it, narrated by 2 narrators. The most-rated is Explorers in Dinosaur World.

Will's mom and dad promise him a surprise for getting good grades in school. When his dad brings home a toy transformer robot named Planetron, Will is pleased, but not very excited. Until he discovers Planetron really transforms, from a toy into a huge, faster-than-light spaceship. And when Planetron asks Will if he wants to travel to the sun and the planets, the real adventure begins. Follow Will and Planetron as they escape dust storms on Mars, dodge hurtling asteroids, dive into Jupiter's great red spot, and ride a comet back to Earth. This is an adventure at the speed of light, filled with exciting sounds, great music, and solid science.
©1998 Geoffrey T. Williams (P)2005 Geoffrey T. Williams

Do you want to know what it feels like to take off and land a Boeing 737 at a busy airport? Or how about flying an F-18 Hornet at more than a thousand miles an hour? Ride with young Chris Galloway in the jump seat of the 737 as the pilot and co-pilot run through their pre-flight checks before jamming the throttles forward and roaring down the runway. Then take a tour of the real Top Gun school and listen to a dogfight over the desert skies. This exciting, fact-filled adventure will help you learn how planes really fly, and what the world looks like from 30,000 feet! There's cockpit and control tower chatter, authentic sound effects, and exciting music. If you've ever wanted a behind-the-scenes look at actual flying experiences, don't miss this flight!
©1998 Geoffrey T. Williams (P)2005 Geoffrey T. Williams

Antarctica is a land of extremes: the coldest, highest, flatest, and most dangerous place on Earth. Join Jon Michaels and his marine-biologist mother as they battle the 60-foot storm seas around Cape Horn on their way to Antarctica. Near Palmer Station, Jon enjoys an outdoor bath in volcano-heated water. Then he scuba dives in the cold, clear waters off McMurdo Station before braving a deadly whiteout flying to the South Pole. On his extraordinary journey, Jon learns some hard lessons: hold your nose near the elephant seals, watch out for the skuas and killer whales, and how to tell if a penguin wants to be your mate! It's a voyage of discovery above and below in this enchanting frontier, filled with drama, history, wonderful sounds, and music.
©1998 Geoffrey T. Williams (P)2005 Geoffrey T. Williams

A.C. Jones is celebrating his 13th birthday on Earth when he gets a present that changes his life forever. He's going to live with his Mom and Dad, on Mars! His journey across the distant reaches of space to join them is filled with fun, danger, and strange new adventures. But maybe his greatest challenge is dealing with the "loonie" he has to travel with. Ilena Asimov is A.C.'s age, but was brought up on the Moon and seems to know everything about living in space. To her, A.C. is a "groundhog" who doesn't know the first thing about zero-g environments. When Ilena finds herself in a life-threatening situation, does A.C. have what it takes to rescue her? Travel with A.C. on his journey of self-discovery, fun, danger, and the science of tomorrow.
©1998 Geoffrey T. Williams (P)2005 Geoffrey T. Williams

Don't let the lush jungles, unspoiled beaches, and rugged cliffs fool you. Dinosaur World's newest attraction is home to the most dangerous animals in the park. Peter Wynne and his young sister Wendy win a contest and get to spend an entire weekend on the island of Pangea before it opens to the public. But getting there, and getting back safely, could present problems. First their boat breaks down as they and their guide are crossing Dinosaur Sea, and they have to find a way to escape the giant elasmosaur looking for something more filling than a few ducks to eat. And then there's the snarling pack of razor-clawed deinonychus blocking their path. There's plenty of adventure, danger, fun, and solid science, around every turn.
©1998 Geoffrey T. Williams (P)2005 Geoffrey T. Williams