Parallel Worlds: A Journey Through Creation, Higher Dimensions, and the Future of the Cosmos is a popular science book by Michio Kaku first published in 2004.

https://en.m.wikipedia.org/wiki/Parallel_Worlds_(book)

The Moon Is a Harsh Mistress is a 1966 science-fiction novel by American writer Robert A. Heinlein, about a lunar colony‘s revolt against rule from Earth. The novel expresses and discusses libertarian ideals. It is respected for its credible presentation of a comprehensively imagined future human society on both the Earth and the moon.^[1]

The Moon Is a Harsh Mistress

Cover of the first edition
Author	Robert A. Heinlein
Cover artist	Irv Docktor
Country	United States
Language	English
Genre	Science fiction
Publisher	G. P. Putnam’s Sons
Publication date	1966
Media type	Print (hardback & paperback)
Pages	382 (1997 Orb books softcover ed.)
ISBN	0-312-86355-1 (1997 Orb books softcover ed.)
OCLC	37336037
Preceded by	The Rolling Stones (shared character)

Originally serialized in Worlds of If (December 1965, January, February, March, April 1966), the book was nominated for the Nebula Award in 1966.^[2] It received the Hugo Award for best science fiction novel in 1967.^[3]

Contents

https://en.m.wikipedia.org/wiki/The_Moon_Is_a_Harsh_Mistress