Broca's Brain - Carl Sagan [21]
I do not think that science and technology have been pursued as effectively, with as much attention to their ultimate humane objectives and with as adequate a public understanding as, with a little greater effort, could have been accomplished. It has, for example, gradually dawned on us that human activities can have an adverse effect on not only the local but also the global environment. By accident a few research groups in atmospheric photochemistry discovered that halocarbon propellants from aerosol spray cans will reside for very long periods in the atmosphere, circulate to the stratosphere, partially destroy the ozone there, and let ultraviolet light from the sun leak down to the Earth’s surface. Increased skin cancer for whites was the most widely advertised consequence (blacks are neatly adapted to increased ultraviolet flux). But very little public attention has been given to the much more serious possibility that microorganisms, occupying the base of an elaborate food pyramid at the top of which is Homo sapiens, might also be destroyed by the increased ultraviolet light. Steps have finally, although reluctantly, been taken to ban halocarbons from spray cans (although no one seems to be worrying about the same molecules used in refrigerators) and as a result the immediate dangers are probably slight. What I find most worrisome about this incident is how accidental was the discovery that the problem existed at all. One group approached this problem because it had written the appropriate computer programs, but in quite a different context: they were concerned with the chemistry of the atmosphere of the planet Venus, which contains hydrochloric and hydrofluoric acids. The need for a broad and diverse set of research teams, working on a great variety of problems in pure science, is clearly required for our continued survival. But what other problems, even more severe, exist which we do not know about because no research group happens as yet to have stumbled on them? For each problem we have uncovered, such as the effect of halocarbons on the ozonosphere, might there not be another dozen lurking around the corner? It is therefore an astonishing fact that nowhere in the federal government, major universities or private research institutes is there a single highly competent, broadly empowered and adequately funded research group whose function it is to seek out and defuse future catastrophes resulting from the development of new technologies.
The establishment of such research and environmental assessment organizations will require substantial political courage if they are to be effective at all. Technological societies have a tightly knit industrial ecology, an interwoven network of economic assumptions. It is very difficult to challenge one thread in the network without causing tremors in all. Any judgment that a technological development will have adverse human consequences implies a loss of profit for someone. The DuPont Company, the principal manufacturers of halocarbon propellants, for example, took the curious position in public debates that all conclusions about halocarbons destroying the ozonosphere were “theoretical.” They seemed to be implying that they would be prepared to stop halocarbon manufacture