TE
科技回声
首页24小时热榜最新最佳问答展示工作
GitHubTwitter
首页

科技回声

基于 Next.js 构建的科技新闻平台,提供全球科技新闻和讨论内容。

GitHubTwitter

首页

首页最新最佳问答展示工作

资源链接

HackerNews API原版 HackerNewsNext.js

© 2025 科技回声. 版权所有。

It Wasn’t the Cows After All

29 点作者 hispanic将近 6 年前

4 条评论

grody将近 6 年前
Nah, it&#x27;s still the cows. No citation of a livestock emissions figure is made by the author. They took an excellent study which didn&#x27;t mention cows at all and repackaged it as clickbait for this company&#x27;s blog...<p>29 gigagrams of methane per year from fertilizer plants, says the study. (The 28 gigagrams figure in the article is misquoted, Ctrl+F for &quot;29 (±18) Gigagram per year&quot; here <a href="https:&#x2F;&#x2F;www.elementascience.org&#x2F;article&#x2F;10.1525&#x2F;elementa.358&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.elementascience.org&#x2F;article&#x2F;10.1525&#x2F;elementa.358...</a> )<p>6.2 teragrams of methane per year from livestock emissions, says this other study <a href="https:&#x2F;&#x2F;extension.psu.edu&#x2F;livestock-methane-emissions-in-the-united-states" rel="nofollow">https:&#x2F;&#x2F;extension.psu.edu&#x2F;livestock-methane-emissions-in-the...</a><p>Last I checked 6.2 teragrams is a lot more than 29 gigagrams.<p>On another note... I highly recommend looking at the original paper. Awesome visual of emissions data captured by Cornell University sensors onboard a Google Street View vehicle! Image here: <a href="https:&#x2F;&#x2F;www.elementascience.org&#x2F;article&#x2F;10.1525&#x2F;elementa.358&#x2F;elementa-7-358-g2.png" rel="nofollow">https:&#x2F;&#x2F;www.elementascience.org&#x2F;article&#x2F;10.1525&#x2F;elementa.358...</a><p>It&#x27;s unfortunate that so much methane is released by fertilizer plants through incomplete chemical reactions, improper combustion, and leaks. 100x more than was previously estimated, in fact.<p>Also a bit curious - how did Cornell researchers get their sensors onboard a Google Street View car? Did Cornell approach Google for this study or vice versa?
评论 #20255524 未加载
ncmncm将近 6 年前
Roger Gordon (<a href="http:&#x2F;&#x2F;www.greennh3.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.greennh3.com&#x2F;</a>) has a design for a small-scale ammonia production system that individual farmers could drive from their own wind turbines. It produces no methane. He has not found investors yet.<p>Driving these big polluters out of business would be a great service to the world, and could be profitable besides. They don&#x27;t just leak methane, they also release huge amounts of CO2. They have no reason to leak methane; it even costs them money. They are just sloppy.
ris将近 6 年前
&gt; Once cattle—raised on grass without synthetic fertilizer—are accurately assessed<p>Except this does not cover the vast majority of cattle consumed. And it doesn&#x27;t cover the effect of forested land being cleared for cattle production.
hamilyon2将近 6 年前
Gigagram? 10 thousand ton?
评论 #20253810 未加载
评论 #20256723 未加载