The Guardian of Earth Series by Rigel Carson, Maggie Toussaint

Plague, locusts, and earthquakes riddle 2065 Earth, but Dr. Zeke Landry focuses on the one resource vital to the survival of Earth: the world’s quickly vanishing water supply. When his uncle disappears, Zeke must abandon his hydrology research to find Uncle John. His efforts land him in deep trouble.The Chameleons, a secret society, believe Zeke has the keystone, an object of great power... morePlague, locusts, and earthquakes riddle 2065 Earth, but Dr. Zeke Landry focuses on the one resource vital to the survival of Earth: the world’s quickly vanishing water supply. When his uncle disappears, Zeke must abandon his hydrology research to find Uncle John. His efforts land him in deep trouble.The Chameleons, a secret society, believe Zeke has the keystone, an object of great power. This group has already murdered in its quest to find the keystone, so if Zeke can’t produce it, his hours are numbered.Time’s running out for Zeke . . . and the world. less