Elon Musk has pledged to settle Mars. This book offers a reality check

In “A City on Mars,” Kelly and Zach Weinersmith investigate what life would be like for humans on the red planet, arguing that Elon Musk’s dream is doomed to fail.

​ In “A City on Mars,” Kelly and Zach Weinersmith investigate what life would be like for humans on the red planet, arguing that Elon Musk’s dream is doomed to fail. Read More Breaking News, Latest News and Videos | CNN