"Hugh Downs: We have harnessed the power of the atom. We have reached the moon. And yet we do not seem to understand our place on earth and the natural laws that govern us. It is in the understanding of these laws, and action in concord with them, that our salvation lies: the salvation of the earth and our own salvation. There is still time. Raymond Burr: Hopeful times are beginning to appear on the international horizon. The recent agreements signed between the United States and the Soviet Union on mutual environmental problems is a large step forward. Only through international cooperation can we hope to correct the crisis facing all mankind. Hugh Downs: Man inhabits two worlds, the natural one that preceded us by billions of years, and the world we have built from our technology using our machines and science to create an environment obedient to our purpose and directions. And now, as we reach the last stages of the twentieth century, there is a spreading sense of awareness that something fundamental and irrevocable is happening to man's relations between both his worlds. Our new knowledge of planetary interdependence demands a reshaping of our individual loyalty. We must develop a sense of planetary community and commitment. We must make our earth a center of rational loyalty for all mankind. Nationalistic loyalties must become secondary to our allegiance to earth. We can only hope to survive in all our prized diversity by achieving an ultimate loyalty and devotion to our single, beautiful, vulnerable planet, the earth. Alone in its life-supporting systems, powered by inconceivable energies mediated for us through the most delicate adjustments. Is this not a precious home for all us earthlings? Is it not worthy of our love? Does it not deserve all the courage and care of which we are capable, to preserve it from degradation and destruction? Now for the first time in the history of man an international movement is underway. The people of the nations, and the nations of the world, have joined together to find the answers. ...[T]he world's representatives hold the solution. We have seen what we've done to bring about the destruction of our earth. Is it not the time now now to cure the disease that we ourselves have created? The answer is in our own hands. In your hands. Don't let this moment in time pass, or we may never have another, not in our lifetime, not in anyone's lifetime."