Public Release: 20-Dec-2017
World War I-era maps help track history of kelp forests in Pacific Northwest
Ecologist uses maps produced before World War I, which have quite a history of their own, to track the growth of kelp beds in the Pacific Northwest over the last century
University of Chicago Medical Center
In the early 1900s, the U.S. Department of Agriculture recognized a problem. The United States relied heavily on fertilizer to grow crops and support its burgeoning economy, yet a crucial ingredient for fertilizer -- potash, a mixture of potassium and salts -- was mined almost exclusively in Germany. German mines supplied nearly the entire world's supply of potash, and at the time the U.S. used about a fifth of its output, half of the amount exported from Germany.
https://sciencesources.eurekalert.org/pub_releases/2017-12/uocm-wwi122017.php
