Geoffrey T. Williams has narrated 4 audiobooks on Listento.it by 2 authors, with an average listener rating of 4★ across 6 ratings. The most-rated is The City and the Stars.

A journey of discovery that will shake the foundations of everything the people of Earth have ever believed... Diaspar is Earth's last city - surrounded by deserts, on a world where the oceans have long since dried up. It is a domed, isolated, technological marvel run by the Central Computer. Diaspar has conquered death. People are called forth from the Hall of Creation; they live for 1,000 years and then are recalled, stored in the Central Computer's memory, to be born thousands of years later, over and over again, with memories of earlier lives intact. No one has entered or left Diaspar since anyone can remember. Its people have an unreasoning dread of the unknown, of the world outside the city. And no child has been born for at least 10 million years. Until Alvin. He is unique. He has no past lives, no past memories. He also has no fear of the outside world. In fact he has an overwhelming curiosity, a drive to explore, to see what lies beyond the sterile boundaries of the city. When he finally escapes, he discovers a place he could hardly have imagined: a country called Lys. Its people are telepathic. They know life and death. In Lys, Alvin finds friendship and love. And he begins his fateful journey to the stars and back. On his return he brings with him something so strange, so alien and powerful, that it will change the world forever. But for better or worse, not even Alvin can guess.
©1956 Arthur C. Clarke/Scovil Chichak Galen (P)2009 Geoffrey T.Williams

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

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