Word: nitrogenous
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...easily maintained, it spews out at least three noxious gases. The Clean Air Act, which is mostly concerned with public health, specifies that the emissions of two-carbon monoxide and hydrocarbons-be cut 90% of 1970-model levels in 1975-model cars, and orders the same decrease in nitrogen oxides in 1976 models. Moreover, the automakers must guarantee the emission controls for 50,000 miles...
...Another system, still being developed, would cope with the nitrogen oxides. * GM's compact Vega may offer a rotary engine as an option on 1975 models. Farther in the future are the steam engine, the gas turbine, the Stirling engine and, perhaps, a battery-powered electric...
...shortcomings is its inability to recycle all the wastes it creates. One instance of such a breakdown of "ecological equilibrium" is the accumulation of tons of guano (bird excrement) along the coast of Peru. Indeed, he noted, it is only when man collects the guano for fertilizer that the nitrogen-and phosphate-rich material is eventually returned to the "biological cycle in the form of plant nutrient." Guano is not the only example of nature's garbage. Peat, coal and even oil are all organic materials that have undergone only partial decomposition. Paradoxically, Dubos added, when man burns these...
Detroit automakers, skeptical that such an engine can develop enough power to drive large U.S. cars, are generally unconvinced that the Japanese advance solves their pollution-control problems. They doubt that the engine will meet the EPA's extremely tough standards for 1976, especially those for nitrogen oxide (Honda engineers insist their machine will easily do it). In tests held in Michigan, Honda's four-cylinder engines, using no catalysts, afterburners or other extra emission-reducing devices, posted pollution counts well below EPA ceilings even after running for 50,000 miles. Here, in grams of emission per mile...
...Nitrogen Oxides...