Preface: Elof Carlson
Introduction: Bentley Glass
Essays on Science and Humanity
Possible advances of the next hundred years: a biologist's
view
Science fiction as an escape
Life forms to be expected elsewhere than on earth
The meaning of freedom
The radiation danger
In search of peace
Human values in relation to evolution
Social biology and population improvement
What genetic course will man steer?
Chronology of H. J. Muller's career
Selected References
Acknowledgments
Index