In the summer of 1997, Charles Moore set sail from Honolulu with the sole intention of returning home after competing in a trans-Pacific race. To get to California, he and his crew took a shortcut through the seldom-traversed North Pacific Subtropical Gyre, a vast "oceanic desert" where winds are slack and sailing ships languish. There, Moore realized his catamaran was surrounded by a "plastic soup." He had stumbled upon the largest garbage dump on the planet—a spiral nebula where plastic ...