Engdahl, Sylvia Louise

Surveys theories and speculations on the possibility of life on other planets throughout history and discusses current scientific thinking on this subject.

An introduction to high energy physics, including a description of sub-atomic particles and a discussion of current theories in the field and areas for future research.

Three civilizations from different planets in widely varying stages of development clash in what could be either a mutually disastrous or beneficial encounter.

Three civilizations from different planets in widely varying stages of development clash in what could be either a mutually disastrous or beneficial encounter.

An anthology of stories showing people learning to adjust to the changes, knowledge, and strange events the future may bring.

Contains twenty-one essays thatprovide a variety of perspectives on euthanasia, discussing assisted death in modern practice, the withdrawal of life-sustaining medical treatment, and physician-assisted suicide, and including a selection of personal narratives.

Three civilizations from different planets in widely varying stages of development clash in what could be either a mutually disastrous or beneficial encounter.

A young girl from an advanced civilization is sent as an observer to a planet whose people have not yet learned to control their use of atomic power.

Introduces the earth, sun, solar system, and outer space.

To prove her independence to her boyfriend, Melinda decides to go to Mars on a pleasure trip--an impromptu decision that changes her entire way of life.