The organisers at Sonoma have done a great job, presenting the proceedings from this conference...
http://www.biochar-international.org/node/3635
http://www.2012.biochar.us.com/conference-videos
Posts
And so this is Christmas…
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The date of Christmas is a matter many find confusing, and yet the adopted
anniversary is easy to understand if you follow through the history,
astronomy a...
4 hours ago
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