See the linked WSU fact sheet above, "Anaerobic digestion effluents and processes: the basics" for more detailed information. Anaerobic digestion For those of you less familiar with the terminology anaerobic digestion, let me first introduce…
Washington State, 10th in milk production nationally, is also at the top of the list for greenhouse gas (GHG) emissions produced from dairy cattle. According to the latest statistics by the EPA, in 2012 Washington State ranked 8th in methane (CH4) emissions from dairy manure management and 12th in nitrous oxide (N2O) emissions (EPA, 2014). […]
A new paper published in Environmental Science & Technology (DeLucia et al., 2014) suggests that scientists have drastically underestimated the earth’s theoretical potential to produce biomass – by as much as 2 orders of magnitude! That’s going to take a minute to wrap my mind around.
Nobel Peace Prize recipient and Director of the Purdue University Climate Change Research Center, Dr. Otto Doering, recently gave a keynote speech where he highlighted his definition of Wicked Problems facing the globe and the…
There are a number of sustainability issues getting a fair amount of attention these days: climate change, regional and local food systems, and soil health, to name a few. While this is obviously good, there are also issues that may be getting somewhat less attention than they deserve. And closing the nutrient loop is one […]
In recent years, increasing numbers of consumers have become interested in making sure the food system is more sustainable. However, the bulk of effort and attention has gone toward the part of the food system that leads up to their forks. Much less attention has been paid to the “post-fork” part of our food system. […]
The fertilizer plant explosion in Texas a few weeks back provided a stark reminder of one of the downsides of energy technology – that they can be dangerous. More recently, a “backyard” entrepreneur in Washington State discovered the same while experimenting with hydrogen fuel – though thankfully with no loss of life. As reported in […]
Last week I introduced a series of frequently asked questions and began by addressing the first: The EPA says agriculture only accounts for 6% of US greenhouse gas emissions. Shouldn’t we focus our efforts on bigger problems such as coal fired power plants and automobile emissions instead? Today I’ll address the following: Do “food miles” […]