The jungles of this tropical island pulse with life.
Lush vegetation blocks the sky.
The underbrush rustles with unseen creatures. Insects struggle and perish in a tiny world beneath human ken. And the air is filled with the songs of . . . There are no birds. Since it was brought to previously snake-less Guam from the Admiralty Islands after World War II in the pipes of a dismantled Navy base, the brown tree snake population has exploded.