Most Popular Books by Richard Hantula

A very basic look at how cell phones work.

This complete Spanish translation of the highly acclaimed Isaac Asimov's 21st Century Library of the Universe is ideal for students still developing their English-language skills.

An easy-to-use source of quick and reliable information, Its My State! helps young readers identify what is common to and unique about individual states across America.

This comprehensive book outlines the geography, history, people, government, and economy of Indiana. Lists of key people, events, cities, plants and animals, and political figures, plus fact boxes and quotes, provide easily accessible information that is supplemented by activities such as crafts, recipes, and a map quiz. Historic photos, artwork, and other images enhance the text.

A biography of the scientist and humanitarian who discovered the vaccine for polio, a disease which crippled many people in the early part of the twentieth century.

Readers learn how scientific principles come into play with sports.

Explains how solar energy is generated and used, discusses solar panels and solar power towers, and considers the use of solar energy as a renewable resource.

A description of Jupiter, the largest planet in our solar system, which includes information on its numerous moons, space probes which have studied it, and the 1994 collision of comet remnants with the planet.

A description of Mars, the fourth planet from our sun, which includes information on the controversy over possible life on Mars, on the planet's moons, and on space probes and spacecraft which have studied it.

A description of Saturn, the second largest planet in our solar system, which includes information on its numerous moons, and spacecraft and probes which study it.

Explores the different types of stars, black holes, and other celestial bodies, including the star-like objects that emit radio waves, known as quasars.

Examines the many facets and puzzles of our Moon, including its phases and eclipses, its early discoveries and modern exploration, and its possible origins and future prospects.

Explores "shooting stars" and famous comets, including Halley's Comet, Comet Hale-Bopp, and Donati's Comet.

This book explores the geography, climate, history, people, government, and economy of Pennsylvania. All books in the It's My State! ® series are the definitive research tool for readers looking to know the ins and outs of a specific state, including comprehensive coverage of its history, people, culture, geography, economy and government.

Recounts the life story of Alexander Fleming, his study of medicine and bacteriology, and his discovery of penicillin.