594 research outputs found
The Quiet Crisis
Most Americans find it difficult to conceive a land ethic for tomorrow. The pastoral American of a century ago, whose conservation insights were undeveloped, has been succeeded by the asphalt American of the 1960’s, who is shortsighted in other ways. Our sense of stewardship is uncertain partly because too many of us lack roots in the soil and the respect for resources that goes with such roots. Too many of us have mistaken material ease and comfort for the good life. Our growing dependence on machines has tended to mechanize our response to the world around us and has blunted our appreciation of the higher values
Transverse Diffusion in Saturated Isotropic Granular Media GEOLOGICAL SURVEY PROFESSIONAL PAPER 411-B Transverse Diffusion in Saturated Isotropic Granular Media FLUID MOVEMENT IN EARTH MATERIALS GEOLOGICAL SURVEY PROFESSIONAL PAPER 411-B UNITED STATES GOV
Tinskya^ a New Genus of Seed-bearing Callipterid Plants From the Permian of \ North-Central Texas GEOLOGICAL SURVEY PROFESSIONAL PAPER 523-E Tinsleya, a New Genus of Seed-bearing Callipterid Plants From the Permian of North-Central Texas UNITED STATES DEP
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