Freshly Exhumed writes: Add another global crisis to the list, courtesy of the recently completed SCS2013 Conference in Reykjavík, Iceland: 'Each year, 12 million hectares of land, where 20 million tonnes of grain could have been grown, are lost to land degradation. In the past 40 years, 30 percent of the planet’s arable (food-producing) land has become unproductive due to erosion', according to a new paper released May 30 by the World Resources Institute.' Hard to have a sense of humus about that.
"The fundamental principle of science, the definition almost, is this: the
sole test of the validity of any idea is experiment."
-- Richard P. Feynman