Sunday, April 27, 2008
Topsoil - Another thing to worry about?
David Montgomery's book is called "Dirt"...
In the Seattle Post-Intelligencer, Tom Paulson writes about it:
"'Globally, it's clear we are eroding soils at a rate much faster than they can form,' said John Reganold, a soils scientist at Washington State University. 'It's hard to get people to pay much attention to this because, frankly, most of us take soil for granted.'
The National Academy of Sciences has determined that cropland in the U.S. is being eroded at least 10 times faster than the time it takes for lost soil to be replaced.
The United Nations has warned of worldwide soil degradation -- especially in sub-Saharan Africa, where soil loss has contributed to the rapidly increasing number of malnourished people."
