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Biogeochemistry--winner of a 2014 Textbook Excellence Award (Texty) from the Text and Academic Authors Association--considers how the basic chemical conditions of the Earth, from atmosphere to soil to seawater, have been and are being affected by the existence of life. Human activities in particular, from the rapid consumption of resources to the destruction of the rainforests and the expansion of smog-covered cities, are leading to rapid changes in the basic chemistry of the Earth.

This expansive text pulls together the numerous fields of study encompassed by biogeochemistry...

The Republican efficiency expert whose economic boosterism met its match in the Great Depression

Catapulted into national politics by his heroic campaigns to feed Europe during and after World War I, Herbert Hoover--an engineer by training--exemplified the economic optimism of the 1920s. As president, however, Hoover was sorely tested by America's first crisis of the twentieth century: the Great Depression.

Renowned New Deal historian William E. Leuchtenburg demonstrates how Hoover was blinkered by his distrust of government and his belief that volunteerism would solve...