Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - CNN had an article about cows being bad for the environment:

Xist · 11-08-2017, 10:36 AM

I do not believe I mentioned the following. I told a professor that supposedly cows were responsible for more greenhouse gas effets than all cars, trucks, and buses in the world.

He replied "Cows aren't, but construction is," although I could not find any support for that, and he could not be more specific, just saying it was specifically methane, although I finally found something:

"The GHG [greenhouse gas] emission for cement production alone is about 92%." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4809014/

I did find endless articles claiming that the approximately million reservoirs held behind dams in the world release almost a "gigaton, or billion tons, of annual carbon dioxide equivalents. That would mean they contributed 1.3 percent of the global total." https://www.washingtonpost.com/news/...enhouse-gases/

"[A]s nutrients like nitrogen and phosphorus flow into reservoirs from rivers — being poured in by human agriculture and waste streams — these can further drive algal growth in reservoirs, giving microorganisms even more material to break down. The study finds that for these reasons, reservoirs emit more methane than `natural lakes, ponds, rivers, or wetlands.;

No no no no no no no! "These reasons?!" Which reasons?! Humans pollute rivers, pollution flows into reservoirs, and bad things happen, but then it suddenly compares this to natural bodies of water.

Don't human-polluted rivers also flow into natural bodies of water? What are these "reasons" that reservoirs emit more methane than natural bodies of water?

“`If oxygen is around, then methane gets converted back to CO2,' said John Harrison, another of the study’s authors, and also a researcher at Washington State. `If oxygen isn’t present, it can get emitted back to the atmosphere as methane.' And flooded areas, he said, are more likely to be depleted of oxygen. A similar process occurs in rice paddies, which are also a major source of methane emissions."

Natural bodies of water have more oxygen than man-made ones? My only takeaway is that rice is bad and so is their condemnation of reservoirs.

11-08-2017, 10:36 AM	#49 (permalink)
Xist Not Doug Join Date: Jun 2012 Location: Show Low, AZ Posts: 12,230 Chorizo - '00 Honda Civic HX, baby! :D 90 day: 35.35 mpg (US) Mid-Life Crisis Fighter - '99 Honda Accord LX 90 day: 34.2 mpg (US) Gramps - '04 Toyota Camry LE 90 day: 35.39 mpg (US) Don't hit me bro - '05 Toyota Camry LE 90 day: 30.49 mpg (US) Thanks: 7,254 Thanked 2,229 Times in 1,719 Posts	Rice is bad for the environment! I do not believe I mentioned the following. I told a professor that supposedly cows were responsible for more greenhouse gas effets than all cars, trucks, and buses in the world. He replied "Cows aren't, but construction is," although I could not find any support for that, and he could not be more specific, just saying it was specifically methane, although I finally found something: "The GHG [greenhouse gas] emission for cement production alone is about 92%." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4809014/ I did find endless articles claiming that the approximately million reservoirs held behind dams in the world release almost a "gigaton, or billion tons, of annual carbon dioxide equivalents. That would mean they contributed 1.3 percent of the global total." https://www.washingtonpost.com/news/...enhouse-gases/ "[A]s nutrients like nitrogen and phosphorus flow into reservoirs from rivers — being poured in by human agriculture and waste streams — these can further drive algal growth in reservoirs, giving microorganisms even more material to break down. The study finds that for these reasons, reservoirs emit more methane than `natural lakes, ponds, rivers, or wetlands.; No no no no no no no! "These reasons?!" Which reasons?! Humans pollute rivers, pollution flows into reservoirs, and bad things happen, but then it suddenly compares this to natural bodies of water. Don't human-polluted rivers also flow into natural bodies of water? What are these "reasons" that reservoirs emit more methane than natural bodies of water? “`If oxygen is around, then methane gets converted back to CO2,' said John Harrison, another of the study’s authors, and also a researcher at Washington State. `If oxygen isn’t present, it can get emitted back to the atmosphere as methane.' And flooded areas, he said, are more likely to be depleted of oxygen. A similar process occurs in rice paddies, which are also a major source of methane emissions." Natural bodies of water have more oxygen than man-made ones? My only takeaway is that rice is bad and so is their condemnation of reservoirs.