Bernie Krause listens to nature for a living. The 69-year-old is a field recording scientist: He heads into the wilderness to document the noises made by native fauna — crickets chirping in the Amazon rain forest, frogs croaking in the Australian outback.
But Krause has noticed something alarming. The natural sound of the world is vanishing. He’ll be deep inside the Amazon, recording that cricket, but when he listens carefully he also hears machinery: The distant howl of a 747 or the dull roar of a Hummer miles way.
Okay so we’ll just the lop the heads of all the people so he can recover that pristine sound he’s searching for? Evolution is the science of change.