Wildlife is clearly suffering from this ceaseless din.
Many species need to be highly attuned to sounds to forage, locate mates, or detect predators.
Migrating birds, as they take their long perilous journeys, are more stressed and in worse body condition if they must feed near roads rather than in quieter places.
Many large animals — from grouse to wolves to elk — tend to avoid roads, most likely because of road noise.
For animals large and small, noisy roads and people are invisibly degrading their habitat.
The only answer — for the sanity and health of humanity and nature alike — it to save substantial areas as ‘sonic-free zones’, where the burble of a brook or a calling bird is fine, but the blaze of a chainsaw or roar of a four-wheel-drive vehicle is not.
The 18th-century American Philosopher, Henry David Thoreau, once famously said that most people “lead lives of quiet desperation”.
Today, we may still be living in quiet desperation, but we're also desperately seeking a quiet place to live.