Twenty of the finest science fiction short stories from one of the genre's greatest writers, Isaac Asimov. Isaac Asimov was the Grand Master of the Science Fiction Writers of America, the founder of robot ethics, and one of the world's most prolific authors of fiction and non-fiction. Asimov's short fiction has been enjoyed by millions for more than half a century. Many of the stories in this collection are classics of the genre, including 'The Martian Way', where the colonists on Mars must locate an alternative water source after Earth threatens to stop supplying water to the red planet. In these stories Asimov's vivid awareness of the potential of technology is translated into human dilemmas that are more relevant today than ever before.