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spec: Nevertheless , writing about the future can be one of the most dangerous undertakings , because the future is essentially unknown and uncertain . Falling yields , linked to poor extension and farming practices and to relatively higher costs of inputs , have encouraged farmers to expand production through extension , often into forests and woodlands . Access to energy is essential for development , but energy generated by the combustion of fossil fuels and biomass often results in air pollution , with negative impacts on human and ecosystem health . that they will buy the software . For many applications these technologies are now mature , and recent cost reductions have brought them into the competitive range . Applicants also must be licensed by examination in a jurisdiction that is a member of the National Council of State Boards of Nursing and have attained a passing score on the licensing examination as outlined in N.J.A.C . The sounds of the training at Fort Knox , Kentucky , still going on about 20 miles southwest . There in plenty were the corrupting items of material wealth against which the missionaries had preached . During the January stay , they will present their findings to Stanford MBAs during a series of lunchtime discussions . Where there are threats of serious or irreversible damage , lack of full scientific certainty shall not be used as a reason for postponing cost-effective measures to prevent environmental degradation .