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The phosphorus cycle. Numbers are 1012 g P or fluxes as 1012 g P per year (data from Schlesinger 199
A noose hanging from a “Liberty Tree” reveals this artist’s bias: The “tar-and-feathering” of a Brit
On May 15, 1916, after deliberating for one hour, an all-white jury in Waco, Texas, found seventeen-
Fetal Period
Portrait of Typical 12-year-old Boy and Girl, 1981 and 2007-2009
Consider a two-period economy with no investment opportunities: first and second period output ...