... one turns away to ponder the question: Who has made the decision that sets in motion these chains of poisonings, this ever-widening wave of death that spreads out, like ripples when a pebble is dropped into a still pond? Who has placed in one pan of the scales the leaves that might have been eaten by the beetles and in the other the pitiful heaps of many-hued feathers, the lifeless remains of birds that fell before the unselective bludgeon of insecticidal poisons? Who has decided — who has the right to decide — for the countless legions of people who were not consulted that the supreme value is a world without insects, even though it be also a sterile world ungraced by the curving wing of a bird in flight? The decision is that of the authoritarian temporarily entrusted with power; he has made it during a moment of inattention by millions to whom beauty and the ordered world of nature still have a meaning that is deep and imperative.

It is only within the moment of time represented by the twentieth century that one species - man - has acquired significant power to alter the nature of his world, and it is only within the past twenty-five years that his power has achieved such magnitude that it endangers the whole earth and its life. The most alarming of all man's assaults upon the environment is the contamination of the air, earth, rivers, and seas with dangerous, and even lethal, materials.

The sea is blue because the sunlight is reflected back to our eyes from the water molecules or from very minute particles suspended in the sea. In the journey of the light rays downward into the water and back to our eyes, all the red rays of the spectrum and most of the yellow have been absorbed, so it is chiefly the cool, blue light that we see.

To get the feeling of what it is like to be a creature of the sea requires the active exercise of the imagination and the temporary abandonment of many human concepts and human yardsticks. For example, time measured by the clock or the calendar means nothing if you are a shore bird or a fish, but the succession of light and darkness and the ebb and the flow of the tides mean the difference between the time to eat and the time to fast, between the time an enemy can find you easily and the time you are relatively safe. We cannot get the full flavor of marine life — cannot project ourselves vicariously into it — unless we make these adjustments in our thinking.

As soon as the earth’s crust cooled enough, the rains began to fall. Never have there been such rains since that time. They fell continuously, day and night, days passing into months, into years, into centuries. They poured into the waiting ocean basins, or, falling upon the continental masses, drained away to become sea.

Some, perhaps, would fall by the way. Some, old or sick, would drop out of the caravan and creep away into a solitary place to die; others would be picked off by gunners, defying the law for the fancied pleasure of stopping in full flight a brave and fiercely burning life; still others, perhaps, would fall in exhaustion into the sea. But no awareness of possible failure or disaster dwelt in the moving host, flying with sweet pipings through the northern sky. In them burned once more the fever of migration, consuming with its fire all other desires and passions.

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The fact that the tube worms have managed to live in the intertidal zone for perhaps millions of years is evidence of a sensitive adjustment of their way of life, on the one hand to conditions within the surrounding world of the rockweeds, on the other to vast tidal rhythms linked with the movements of earth, moon, and sun.