Countering 21st Century Social-Environmental Threats to by Frederic R. Siegel

By Frederic R. Siegel

This publication brings jointly in one quantity a grand evaluate of ideas - political, fiscal, and clinical - to social and environmental difficulties which are with regards to the expansion of human populations in components that may least do something about them now. via revolutionary edition to social and environmental adjustments projected for the longer term, together with inhabitants progress, international warming/climate swap, water deficits, and lengthening pageant for different traditional assets, the realm are able to in attaining a good measure of sustainability for it slow into the future.

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This means that the brine issuing forth from desalination processes has a high salt content and poses a waste disposal problem that will be discussed at the end of this section. The multiflash stage distillation technique uses seawater as the feedstock at pressures less than atmospheric pressure so that the seawater boils at less than 160 °F. At this temperature, scaling (buildup of foulant salts) in the equipment is greatly reduced. The system is designed so that the seawater passes through progressively lower pressure conditions and steam flashes off at steadily decreasing boiling temperatures and is captured.

That we will be able to increase global food production 60–70 % by 2050 does not mean that the world’s future hunger problems will be solved. Political, economic, and logistics issues will have to be resolved in order to ensure that food reaches the people suffering or close to suffering malnutrition. , weeds, pests, extreme weather) that reduce the yield and nutritional value of foods that are staples for billions of people worldwide such as maize [corn], rice, wheat, soy, and other grains. This is being done through hybridization.

Waters used in irrigation reenter the hydrological cycle and are naturally “scrubbed” as they recycle into aquifers and surface waters for reuse. As populations continue to grow, the mass of food that will have to be produced will rise dramatically. 5 billion or more people added to the 2013 global population that today has one in seven people on Earth suffering from malnutrition because of the lack of access to enough and good quality food [11]. For this reason, more water will be needed by the agricultural sector even as hybridization and/or genetic engineering develop seeds for crops that require less water to grow or that improve their drought resistance.

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