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Tasty Seaweed Reduces Cows’ Methane Emissions by 99%

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Re: Tasty Seaweed Reduces Cows’ Methane Emissions by 99%

#321

Let's not forget: - Producing cows is resource-intensive. Water and feed could be used more effectively elsewhere. - Consumption of red meat and dairy is generally unhealthy. - Runoff from cow "pastures" is effectively pollution. Encouraging less use of cows because of their impact on climate change was a win on a number of levels. Not any more.

I really think it is irresponsible to keep repeating dietary hypothesis as fact.

The notion that red meat is bad for you does not have compelling evidence, based all my years of obsessively researching this ... and with the help of equally obsessive and more qualified friends.

As far as I can tell, how a diet makes you feel and presents visually is the closest thing we have to a reliable indicator of the health effects of that diet.

From that standpoint, many many people get amazing results from a diet high in red meat.

I cannot urge people enough to maintain skepticism with regards to “scientific” dietary advice, and try to do what makes them feel healthier and more energetic.

Re: Tasty Seaweed Reduces Cows’ Methane Emissions by 99%

#324
post #172

Skeptical science remark: This whole "if cows eat seaweed that'll vastly reduce their carbon footprint" is based on a single study with 12 cows. If you take into consideration that especially small, never replicated studies often don't hold up to scrunity the next thing to do is not to ask how to produce the seaweed. The next reasonable step would be to try to replicate this study in a larger sample (and probably als…

I agree, we need to slowly study other groups of cows to see if this is a viable solution.

I'm reading Factfulness by Hans Rosling at the moment. He had a great point about "single numbers" - the jist was to always be skeptical of just a single number or metric.

Here's an example [1]. During WWII, soliders were dying in their own vomit because they were laying prone on the battlefield, in sick beds, etc and left unattended. Doctors tried using the Recovery Position [2] and saw a decrease in those types of deaths by about 99% (this is in the book).

Sounds like it should work for other types of people, right? First aid organizations quickly updated their "best recommendations" for all types of people: sick, drunk, young, old. This position was the best possible position for increased airway access, thereby decreasing preventable patient deaths.

It wasn't until the 1980's that this idea was challenged. A few health organizations noticed an increase in infant deaths. Hong Kong's group was the first to investigate this [3]. Other groups joined in and realized that infants, when turned on their stomach, do not have the strength to tip their heads after they vomit. As a result, infant deaths increase when they are placed into the Recovery Position.

The recommendation was quickly updated in the late 1980's / early 1990's. Now the recovery position is recommended for people ages 5 and up.

Between 1940 - 1985, there was a larger number of infant deaths because one group of well-meaning people took some knowledge they gained for one group and quickly applied it to all other groups.

I think this study (cows reducing methane based on diet) is a great idea. But we need to be cautious about applying this quickly to all cows, else we could kill half the cow population and cause the cost of beef to skyrocket.

[1]: https://www.gapminder.org/factfulness-book/notes/, Page 163.

[2]: https://en.wikipedia.org/wiki/Recovery_position

[3]: https://www.ncbi.nlm.nih.gov/pubmed/2866397?dopt=Abstract

Re: Tasty Seaweed Reduces Cows’ Methane Emissions by 99%

#325

Man - cows eating seaweed is no more natural than cows eating corn. We need to stop bastardizing natural systems for our own comfort and convenience.

I mean, you know there are no 'cows' in the wild. We made cows from aurochs.

Re: Tasty Seaweed Reduces Cows’ Methane Emissions by 99%

#326
I always thought that part of problem with huge methane emission from livestock maybe due to what we feed them. Perhaps their stomachs are not meant to eat primarily grass and the types of plants we typically allow them to eat.

Maybe other types of plants and crops should be fed instead.

Re: Tasty Seaweed Reduces Cows’ Methane Emissions by 99%

#327
post #276

Earlier quoted context omitted.

it certainly seems like a farfetched bandaid for a very inefficient food source (no matter how you view it)

Definitely. We'll never harvest more than 10% of the energy we feed livestock. https://en.m.wikipedia.org/wiki/Trophic_level

There are plenty of things that animals can eat that are inedible to humans, or at the very least unpalatable. Tree fodder, rapeseed meal, sunflower husks, wetland reeds.

Feeding animals nothing but corn and soybean is a travesty for a number of reasons but that doesn't mean meat production as a whole needs to stop.

Re: Tasty Seaweed Reduces Cows’ Methane Emissions by 99%

#328

More of a philosophical perspective here: The eco-systems on Earth have evolved over a long time. Without bias against scientific progress, why do we think we can "solve" this without going down a slippery slope of creating another problem? When is comes to complex systems that we don't completely understand, maybe the simplest solution is to just restore the system, that is "give up" on cows as human feed.

I don't think it's as simple as you're making it out to be—not universally, anyway. Diet and nutrition are also complex systems—moreso for some of us in the population. I've written this out a number of times before so I'm just going to link my last comment on the subject.

I feel the need to speak up for people with similar conditions for whom simply cutting out a crucial part of our diet is not resolved.

https://news.ycombinator.com/item?id=20635612

Re: Tasty Seaweed Reduces Cows’ Methane Emissions by 99%

#329

Earlier quoted context omitted.

You're absolutely right, but the effect size is pretty damn impressive and I expect this to at least partially replicate.

Having a small sample and a large effect doesn't mean you're guaranteed at least some effect on a large sample. If anything, a very large effect is more likely to indicate a flaw in your method.

Maybe? But an effect which relies on a link between diet and farting isn’t exactly remarkable or even surprising.

My dog farts the most noxious gas if he eats apple or chicken.

Re: Tasty Seaweed Reduces Cows’ Methane Emissions by 99%

#330

Man - cows eating seaweed is no more natural than cows eating corn. We need to stop bastardizing natural systems for our own comfort and convenience.

Cows allowed near the ocean will naturally graze on seaweed.

Seriously? It's hard for me to picture cows wandering on a sandy beach. But, if true, I stand corrected - to a certain degree. Thanks.
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