Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

New answers tagged

1

If by tea leaves you mean the camellia sinensis used for green tea, then it is just as foreign to certain areas as banana peels are. I find Sue's answer from the coffee question quite decisive here. Furthermore you don't know by what was a certain tea treated, that means there is no guarantee that you wouldn't bring in any substance which is not supposed to ...


0

Used (spent) coffee grounds contain little to no caffeine (after all, its been extracted into the cup you drank). Depending on the situation, either pack it out, bury, or spread diffusely over a wide area.


11

The Leave No Trace approach to coffee grounds is to bring them in carefully without spilling them, use them responsibly without making a mess, and take them with you when you leave, together with all your other biodegradable materials. Don't scatter, bury or burn them. In June, 2019, Popular Science magazine published an article based on an interview with ...


18

The material in Owlcation, Can Caffeine Kill? How It Impacts Animals, Plants, and the Environment, updated June 23, 2018, suggests that the safest thing to do with coffee grounds, relative to the environment, is to pack them out. Caffeine has a stimulating and apparently not harmful effect on horses, birds, and bees. Caffeine is banned in horse racing and ...


1

Another factor to keep in mind: Heat rises--the warmest part of the ice chest is on top. Thus you have ice there and food underneath it so it's ice that melts rather than food. That being said, you're asking more of an ice chest than it's capable of. Even stuff like the Yeti chests can't do this.


12

... can someone gather/hunt/farm all of the nutrients required to be healthy whilst never having to land again? Nutrients yes, healthy not likely. A 1000 days is a grueling journey. Reid Stowe, whom used to have a website called (Beyond) 1000 Days at Sea: The Mars Ocean Odyssey, lived at sea (without contact with land) for 1,152 days (equals 3 Years, 1 ...


14

The short answer is that you need to get rid of all the air from inside your ice box. So no, frozen food by themselves won't work. The easiest way to deal with this is to let an outfitter prepare the food. Even for a private unguided trip, you can get outfitters to do all the logistics work from put-in to take-out (that's what we did when I rafted the Grand)....


3

To give two more numbers that can serve as rough guesstimates which make clear that cooling for 18 days on a tour is likely unfeasible. I'm assuming hiking tour as it isn't specified. One rule of thumb for shipping biological (research) material on dry ice in the type of styrofoam containers used for this is to pack 1 kg of dry ice per day. Which would be ...


23

Theoretically, it might be possible to survive on fish, rainwater and desalinated seawater alone. In one 1930 experiment, two men survived for a year eating exclusively meat without experiencing any health issues. This indirectly suggests that meat (and therefore possibly also fish) contain all the essential nutrients, but this was a small and relatively ...


-2

As others have pointed out, you cannot do so with a portable cooler. It is, however, possible to keep ice for months, passively. You will need to dig an ice house, which should be the size of a typical basement/cellar, and fill it with several tons of ice during the winter. The Grand Canyon North Rim should have plenty, you can either dig your pit on the ...


2

The water temperature, which used to get as warm as 80 degrees F, is now icy-cold all year and averages around 42 degrees F And hey, what do you know, refrigerators are often set at 42F... So... multiple smaller high quality coolers, with dry ice and your frozen meals. Do not open them until needed, and try not to need them until the previous cooler is ...


19

I'm assuming the amount of food you want to take and your coolbox size is fixed, so the question you're asking is really whether you should fill every remaining gap with ice, or whether you should leave it as air. The answer to this is that air inside your coolbox is a big problem, and will majorly contribute to thawing. The specific heat capacity of air ...


5

I will not comment on the general feasibility of your plan. However, I did a little research about the specific heat of various materials, and the results are actually pretty interesting. We are looking at how long a given item will stay cold. Said another way, we are interested in how much heat energy the food or ice can absorb while remaining cold. The ...


46

Short answer: A cooler containing more ice and less frozen food will last longer than a cooler containing all frozen food. With frozen contents of a given mass, the length of time a cooler will stay cold is proportional to the latent heat of fusion of the contents. The latent heat of fusion of water ice is 334 joules per gram. ASHRAE (the American Society ...


30

If you look for the manufacturer's promises for these "passive" boxes (there is absolutely no cooling, just the attempt to keep the cool in - called isolation), they usually state something around 24h to keep things cool. You don't even have to start thinking how the manufacturer got to this number. There is no way to use it in the way you proposed because ...


0

I don't have numbers (yet), only rough guesstimates from observing the appetite of my 3 yo swiss mountain dog He's on the skinny side and the least greedy dog I know, so appetite probably translates quite well to needs (at least for dry feed). I observe decided variation in appetite depending on ambient temperature and activity level. I'd say that he ...


2

Depending on a couple factors such as ingenuity and whether or not you are considering the land needed to hunt game to be included in the total land area needed, i think it could easily be done on two acres or less. There are many stories of people growing enormous amounts of food on small suburban plots of land. Here are three examples of extreme ...


0

Plastic medical bottles for liquids that have been rinsed well ( the 250 ml size is perfect)


Top 50 recent answers are included