Alvin Sputnik: Deep Sea Explorer, showing through August 28 at the Underbelly as part of the Edinburgh Fringe Festival, takes place sometime in the near future. Global warming has caused sea levels to massively rise, and the remaining humans live in rickety stilt houses perched atop skyscrapers. The performance’s opening sequence shows our hero, Alvin Sputnik, at the bedside of his love, Elena. He sings her a simple song on his ukulele as her soul (a point of light) flies out the window and into the ocean. Alvin is despondent, until he sees an ad on television calling for volunteers […]