American physicist, educator and book author

Eight preposterous propositions : from the genetics of homosexuality to the benefits of global warming / Robert Ehrlich.

What if? : mind-boggling science questions for kids / Robert Ehrlich ; illustrated by Ed Morrow.

Nine crazy ideas in science : a few might even be true / Robert Ehrlich.

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Robert Ehrlich

Works from the collections

Eight preposterous propositions : from the genetics of homosexuality to the benefits of global warming / Robert Ehrlich.

What if? : mind-boggling science questions for kids / Robert Ehrlich ; illustrated by Ed Morrow.

Nine crazy ideas in science : a few might even be true / Robert Ehrlich.