If you are an omnivore with a conscience, you might have been feeling a little guilty of late. A couple of big data papers were released recently showing that beef production produced more emissions and used more resources than other livestock production systems. The study that received the most coverage looked at land, water and nitrogen impacts of cattle production. The authors note in the article (and clearly state in the title) that the data and results are only relevant to the US livestock industry. They only considered land, irrigation water and nitrogen fertilisers used for feed production (e.g. corn, soybean, grain etc.), mostly in the US Midwest and they do not include pastured beef in analyses. So with these results, we can only talk about industrially-farmed beef, dairy, pork and poultry in the United States (i.e. feedlots and factory farms), but few media reports acknowledged this.
Industrial livestock production is bad for livestock, farmers, the environment and the people that eat the produce – to a lot of people, that won’t be news. So it is great that studies like these can show how much industrial livestock also affects the bottom line and national accounts, as these are the things that might effect change where it needs to happen. In an ideal world, there would be no supermarket shelves stocked with faceless beef. So here are a few positive facts to make that ideal seem possible.
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Finally, some great news for those trying to keep their backyards free of coal seam gas wells. In world-first research, two scientists from Southern Cross University, Dr Isaac Santos & Dr Damien Maher, have found evidence of extremely high levels of atmospheric methane near coal seam gas (CSG) fields. Using a high-precision methane detector, Santos & Maher took thousands of air samples between Lismore (in northern New South Wales) and Tara (in southern Queensland), creating a pretty clear picture of methane levels across the region.
Tara is the largest CSG field in Australia and has been a hub of gas production for a few years now, whereas the Northern Rivers region (near Lismore) has lots of ‘natural’ or non-CSG methane producers, such as natural wetlands, sewage treatment plants, an airport and plenty of cattle. In northern New South Wales, the scientists found atmospheric methane concentration never rose higher than 2.1 ppm (natural background levels are around 1.8 ppm). However, around Tara, the methane levels went up as high as 6.9 ppm, with no recorded values below 2 ppm in this region. Continue reading →
This post started as an embryonic thought in my mind nearly a year ago. It’s about coal seam gas (CSG) mining and hydraulic fracturing or ‘fracking’ – terms that are even more of a conversation-killer than the topic of my last post.
There is still a great deal of vagueness around the CSG industry, and I think the exploration companies prefer it that way.
Yet there is enough information out there if you look for it. I won’t list all the (reputable and rational) discussions of evidence that fracking or CSG mining is bad for the environment and bad for people – if you’re interested, they’re not hard to find. DeSmogBlog, Yale environment360 and Mother Jones are a good start. Also a must-see is the movie Gasland, by Josh Fox. Continue reading →