Earlier quoted context omitted.
Trucking industry is looking at hydrogen fuel cells. The hope is that renewables will create the hydrogen from water. For aircraft, the dream is to create synthetic fuels from ammonia. Ocean going vessels are hoping Diesel engines can be converted to use ammonia. https://www.freightwaves.com/news/is-green-ammonia-fit-to-de...
Unfortunately hydrogen has really low energy density, electrolyzers are slow, and it is also pretty explosive. I don’t see hydrogen fuel cells being nearly as attractive as EV retrofits or CCS as an interim solution until battery tech cost curves improve to the point of making full electrification a no brainer (probably not that far away…)
Alaska snow crab season canceled after disappearance of an estimated 1B crabs
391–400 of 425 posts
Re: Alaska snow crab season canceled after disappearance of an estimated 1B crabs
#392Earlier quoted context omitted.
This is actually why I'm buying an ICE truck rather than an EV. We need fossil fuels for so much, including fertilizer. It feels irresponsible to buy an electric.
What? This makes no sense. If fossil fuels are important, we should be saving it for where it is needed.
That would be rather logical now, wouldn't it? However, I'm afraid that when someone says that we must reduce our dependence on petrochemicals I must mention that there are things for which we have no replacement for petrochemicals. I must argue that eliminating petrochemical use is impossible any time you ask to reduce use. I don't make the rules.
Would you like to hear about how some Americans need a truck to do work too? Just go ahead and mention that we should aim to use smaller vehicles.
Re: Alaska snow crab season canceled after disappearance of an estimated 1B crabs
#393Overfishing is a classic problem of "Tragedy of the Commons". The oceans are the commons. For example, nobody is predicting a catastrophic decline in the population of pigs, chickens, and cattle. Fish farming is the future.
They often feed the fish in farms with wild fish... it's a joke, currently.
The percentage of wild fish as a proportion of feed has been going down. Researchers and companies are aware of this problem. Duckweed and farmed insect formulated fish feed are being tested and produced right now. It's still not great that wild fishes not fit for human consumption and whose capture is contributing to overfishing are used to support fish farming.
Re: Alaska snow crab season canceled after disappearance of an estimated 1B crabs
#394No post body was provided.
Re: Alaska snow crab season canceled after disappearance of an estimated 1B crabs
#395No post body was provided.
Re: Alaska snow crab season canceled after disappearance of an estimated 1B crabs
#396Earlier quoted context omitted.
Which will likely involve not raising animals for slaughter at all, but rather things like Impossible/Beyond meats.
Impossible/beyond apparently have similar CO2 footprints as turkey. On the other hand, we're in the middle of a turkey shortage due to bird flu.
Where are you getting that from? Other data suggests that even worst case production of plant sources of protein come out far ahead of even the best case production of meat, dairy, etc.
> plant-based foods emit fewer greenhouse gases than meat and dairy, regardless of how they are produced. > […] > Plant-based protein sources – tofu, beans, peas and nuts – have the lowest carbon footprint. This is certainly true when you compare average emissions. But it’s still true when you compare the extremes: there’s not much overlap in emissions between the worst producers of plant proteins, and the best producers of meat and dairy.
Re: Alaska snow crab season canceled after disappearance of an estimated 1B crabs
#397Earlier quoted context omitted.
What? This makes no sense. If fossil fuels are important, we should be saving it for where it is needed.
That would be rather logical now, wouldn't it? However, I'm afraid that when someone says that we must reduce our dependence on petrochemicals I must mention that there are things for which we have no replacement for petrochemicals. I must argue that eliminating petrochemical use is impossible any time you ask to reduce use. I don't make the rules. Would you like to hear about how some Americans need a truck to do wo…
I agree. petrochemicals are very useful, so we should not be burning it all up. It takes millions of years to produce organically.
Re: Alaska snow crab season canceled after disappearance of an estimated 1B crabs
#398Something similar happened to the cod fishing industry in Newfoundland and other parts of eastern Canada 30 years ago. The reason: overfishing, due in large part to technological advances. Here's what happened: Canada and NAFO continued to overestimate the abundance of cod in the Atlantic Ocean and therefore continued to set dangerously high [Total Allowable Catches]. This was in large part due to the widespread prac…
I work in the Alaska fishery and am typing this while sat in one of the largest fish processing facilities in the western hemisphere. I have the spare time because, well, there's no crabs coming in and everything else is mostly out of season. About half of the boats on Discovery belong to the company I work for, the largest in the US. So I'll take the opportunity to share some on-the-ground observations. Overfishing:…
Non-sequitur, but I love that I get this sort of first-hand color on a niche industry on HN.
Re: Alaska snow crab season canceled after disappearance of an estimated 1B crabs
#399Earlier quoted context omitted.
Talk to a European about that evil addiction to fossil fuel this winter.
I mean yeah, using gas to heat homes is dumb. Electrically powered heat pumps seem like the way to go.
Cost of resistive heating is around 2-5x the amount you'd pay for nat gas equivalent. Probably not that dumb, unless your actually point is that poor people just need to be cold for climate change.
Re: Alaska snow crab season canceled after disappearance of an estimated 1B crabs
#400Earlier quoted context omitted.
Impossible/beyond apparently have similar CO2 footprints as turkey. On the other hand, we're in the middle of a turkey shortage due to bird flu.
Source please.
That's precisely the problem. I cannot provide one, and neither can you. Neither of those companies internally audit their CO2 footprints, and their supply chains are opaque:
https://seekingalpha.com/article/4355008-beyond-meat-may-be-...
https://www.fooddive.com/news/beyond-meat-lags-conventional-...
This study says Beyond burgers are at 10% the greenhouse emissions of cattle:
https://css.umich.edu/publications/research-publications/bey...
Poultry is at 10%. Chicken is at 20%. (See the first and second bar graphs):
https://www.bbc.com/future/article/20220429-the-climate-bene...