H. M. (Helen Mary) Hoover

Retells well-known classical myths using works of art in Washington D.C.'s National Gallery as illustrations. Also includes information about the paintings, sculptures, and artists.

When rebel forces strike against her father, the all-powerful president of Mars, teenage Annalyn finds her comfortable existence turned upside-down and her life threatened from unexpected sources.

When she is kidnapped from the Earth in 2349 to serve as slave labor on an artificial world under construction, twelve-year-old Abby must cooperate with her fellow prisoner Bryan, a spoiled rich boy, in order to plan an escape.

Having been trained in supernatural knowledge, thirteen-year-old Medea finds herself in a unique position to help when the Greek hero Jason comes to her father's kingdom in search of the Golden Fleece.

On an Earth that has become an inhospitable wilderness, Toby and her friend Thaddeus find themselves lost in "the empty" with Orvis, an obsolete robot who is their only hope of protection and escape.

When a colonist from a forgotten artificial moon returns to earth, thirteen-year-old Merry and her grandfather must battle to save their culture from the visitor's strange powers.

On a vacation trip to a distant planet, Jenny, her father, and their guide tour a mysterious wilderness which holds ancient relics and menacing creatures.

After being lost for several hundred years, a space colony is rediscovered by an exploratory expedition from Earth whose technology threatens to destroy the colony's painfully constructed civilization.

Although both know it is forbidden, Amy and Axel hope that by following the countless ramps leading upward they can escape from their filthy subterranean world.

This is a coming of age story in a sci-fi setting that also addresses existential questions. While definitely a young adult work, it has depth enough to engage adults. All of Hoover's work is good; her setting is plausible and her characters animated and realistic.

Many generations after the Delikons have conquered and reordered Earth, their system of power and organization begins to crumble.

Two teenagers with telepathic powers, having spent some time with a more advanced culture, return to their own primitive society and wonder where they really belong.

Describes the changes that take place in the life of a Caucasus chieftain's son before and during his stay as a hostage in the court of Nicholas I.

Twelve-year-old Cody discovers that the Terran Corporation, in colonizing the planet Patma, is illegally destroying the intelligent native inhabitants, giant insectlike creatures with their own language and religion.

On a strangely beautiful planet of vast grazing lands and gentle valleys, a small expedition of scientists is exploring, testing, searching. Theo, a biologist, is alone in her camp in the hills when she finds Karen, a young girl recently orphaned, the victim of political unrest resulting from the unexplained terror that grips most of the human population like a dread disease. Nearby in a cave the discover a strange desiccated, mummy-like mounds—huge, caterpillar-like creatures that appear to be dead, surrounded by magnificent crystals of incalculable value. Like true scientists, Theo and Karen take their sample for further laboratory study and return to the base. And then it starts to rain...

After an unfortunate murder two telepathic children, members of a primitive civilization, are led to escape by a friendly, unseen voice.