Strahl is convinced Alaska has the cleanest humus to be found anywhere. "There are very few places on the Earth where you can get this stuff," Strahl said. "It's virgin soil." Strahl has worked in ...

G. V. Jacks, deputy-director of the Imperial Bureau of Soil Science, Rothamsted, delivered a lecture on February 12 to the Royal Society of Arts, in which he dealt with the origin of humus ...