We should also expect the seas to rise a few inches, first because seawater will expand as it gets warmer, and secondly because ice will flow off the land and melt. Some aspects of global warming are not often discussed. For example, the secondary consequences of heat waves, droughts, and storms. Atrazine is an herbicide that interferes with the endocrine system in wildlife and humans. Furthermore, the combination of drought, high temperatures, and mice loosened the soils over a large area, allowing winds to strip off 20 to 30 million tons of valuable topsoil and move it out to sea.
Drought affects human health as well.
In New Zealand, as a long drought worsened in 1994, authorities made preparations for managing epidemics of hepatitis A, diarrhea, and cholera. The IPCC in 1994 estimated that global warming is likely to have its severest impacts on humans by diminishing agricultural output and making food scarce. Shifting climatic zones northward will increase the arid zones and thus diminish the land available for crops. Rising seas will cover much good farmland, further reducing available croplands. Jeremy Leggett, TIME BOMB, cited above, pg.