128

When travelling on extremely remote roads, you need to prepare for the worst. This is even more true if you are travelling in a climate where the weather might kill you within days, such as in extreme cold. I've had a car break down once at -35°C. That road in Northern Sweden wasn't as remote as the one in Siberia you describe, as it still had maybe two ...


101

There are several reasons why I think rationing is useful. Morale - If you eat all your food on the first day you won't have anything to look forward to. If you eat a little bit twice a day you can look forward to your next morsel instead of regretting eating all your food. Meals become a break in the monotony and something pleasant you know will be coming. ...


74

There's an abandoned quarry near me where local kids used to jump off the topmost cliff edge, 100 feet up, every summer. When done properly it is survivable without injury. You have to break the surface tension with a part of your body that can take the blow, and you have to keep all your muscles clenched and your body absolutely rigid, and you have to hit ...


63

Settlements tend to be near water like rivers, lakes or oceans and the larger the body of water, the more likely there are people. A small stream is likely to join another at some point. This is why going downstream (or merely going down if there is no stream) is the safest bet if there are no other clues. Even if you're not actually on a mountain, it's more ...


52

How I've practiced is I hold my left hand palm out, and I create a "V" between my ring and middle fingers with the plane or person between my fingers. I then hold the mirror by my face and shine the mirror between my fingers. You should see the light on your hand to confirm you are shining in the right direction.


52

Aside from the previously mentioned micronutrients, your body doesn’t really store protein in any significant way, so in order to ‘repair’ your body you need a relatively constant stream of protein (or rather, amino-acids). Nothing bad happens if you fast for a short while, but it does mean you will obtain amino acids from breaking down your own muscle which ...


50

First, if you go somewhere in a car, take along the clothes necessary to be outside for an extended period. 406 MHz PLB (Personal Locator Beacon) All the tragedies have one thing in common: they did not have one of these and/or did not activate it. This is the gold-standard, same as aircraft ELTs and ship EPIRBs and works worldwide on the COSPAS-SARSAT ...


49

I suggest using both the car and the tent together. A car will lose heat fastest through the windows, so use the tent to cover them (and the top). The windows are a thin single layer of glass, while the panels trap a layer of air between the metal outer and a lining that is a better insulator than glass. The panels also block radiative heat loss from the ...


46

Well, I'm from Russia, and I heard that in the most desperate situation like this you can burn your car's tires. The tires are made of oil, so they burn well. Using fire from tires you can use other car parts that burn well, like a seat. This will allow you to last at least for a day and if you're driving a big car, like a semi, you can last several days. ...


44

The conclusion is not correct. Some bacteria produce toxins which are not destroyed by heat, for example Staphylococcus. See this link for more information. Note that this is not strictly an outdoors issue. Even at home, you should not keep fresh meat in your fridge too long before cooking it, as it gives time for bacteria to produce toxins. The ...


41

Here is an article that quantifies the heat loss effects of cotton, polyester and polypropylene: Rossi et al., Dry and Wet Heat Transfer Through Clothing Dependent on the Clothing Properties Under Cold Conditions, International Journal of Occupational Safety and Ergonomics (JOSE) 2008, Vol. 14, No. 1, 69–76. Experimental Summary Here is a rough summary of ...


40

In many parts of life, you have to play the percentages. The likelihood is higher that going downstream will lead you to a trailhead or some other sign of civilization than it is for going upstream. As for the comment that ....as long as you stay on the road, you will find civilization. This may be true of a road, but it is often not true of a trail. ...


37

You can place an empty cup in the middle of a lightly filled bucket of sea water. You then place a plastic bag over the bucket, with a stone in the middle so it has a dip in it over the cup. The sea water evaporates, reforms on the plastic bag (without any salt in it) and then drips into the cup. Slow but far better than drinking sea water.


36

First, you won't need to make this observation if you routinely drink when you stop to rest, and if you eat something at least slightly salty whenever you snack (if your snacks include jerky or salted nuts you're more than covered.) Second, pay attention to your thirst. Many of us ignore our bodies for hours at a time - postponing bodily functions during a ...


35

Let's do some back-of-the-envelope calculations. The specific heat of water is the amount of energy needed to raise the temperature of a particular amount of water by 1 degree C. This is 4.186 joules/gram °C (reference). To raise the temperature of 1 L of water (1000 g) by 80 degrees C (to boiling from room temperature), would be 4.186 * 1000 * 80 = 334,...


35

Salt dissolves in water so will pass though a normal filter or cloth. You can try that with a coffee filter at home. So there's definitely an error in the article. A still (i.e. distillation apparatus, whether solar or fire-heated) is the only easily improvised way to desalinate water, but the article I read said he caught and ate fish - that will provide ...


34

It is likely caused by iron in the pump or pipes. According to the Illinois Department of Public Health: Iron is mainly present in water in two forms: either the soluble ferrous iron or the insoluble ferric iron. Water containing ferrous iron is clear and colorless because the iron is completely dissolved. When exposed to air in the pressure tank or ...


34

Hot soup mostly, it does depend on the individual diets of the climbers, not everybody eats the same thing, but most carry hot soup with them. Despite the massive amounts of energy needed to summit Everest, the truth is most climbers don't eat much on summit day, and that's simply because they don't have an appetite due to the high elevation. Many climbers ...


34

Dehydration will very quickly reduce your ability to undertake the activities required to survive and so finding and conserving water should be a very high priority in any survival situation. Clearly there are potential dangers associated with drinking contaminated water but these need to be weighed against the dangers of dehydration. As with most survival ...


31

The correct answer is to put your avalung mouthpiece in your mouth and inflate your airbag. If you don't have either of those things, then you are NOT properly equipped to be in avalanche terrain. If you get caught in an avalanche when you are not properly equipped, then the best you can do is 'swim' like crazy to try and keep yourself afloat, and then ...


31

TL;DR - First try to identify if the wire is supposed to carry electricity (insulators on posts/wire goes to an electrical box/posted warning signs/ect...). There's really not much you can do to check the wire for current without a device aside from listening to it, touching it (potentially dangerous), or throwing something onto it that might react to a ...


31

There are many nutrients that your body cannot store, or not in decent extra amounts. Water, salt, potassium, vitamin C, etc. You will rapidly excrete these, and then greatly feel the lack of them when you are fasting for days. Yes, you can to some extent gorge yourself on macronutrients (fat, carbs, protein) because these will be stored as body fat ...


29

I personally had a similar sort of a question when I first went through similar kind of stats about these mountains. Getting introduced with these stats is different than totally understanding the mountain and the pandora box it opens. For getting acquainted with the reasons for so many failed attempts, one needs to read tactical data and expedition reports. ...


29

When a rattlesnake gets his rattle on, what exactly is the desired reaction it's expecting from you, and what other indicators does it give you that a strike is imminent? It's a warning that it's there, it's not necessarily a warning that it's about to strike (though of course, it could.) Likewise they won't always rattle before they strike. However, bear ...


29

The simple answer is that yes it does make sense to ration, see the stories of the men who survived the Essex or the Mutiny on the Bounty or the Chilean Miners or many countries during wartime. From a mathematic point of view, one rations when does not have enough food for the timeframe between now and a resupply. If you eat enough to be full all the time, ...


29

As you said yourself: mud. Or cotton as Gabriel answered, or wood, or leaves, or bark, or anything that stops light from reaching your skin. Is there any natural material that without any processing can be applied as a cream, is nearly invisible in the visible spectrum yet stops much of the UV-rays? Not to my knowledge. Which is why we have to make it. But ...


29

Trails show less use the farther from the trailhead one goes because fewer people walk the trail all of the way to the end and most turn around far more quickly. The odds are that going downhill will lead one back to civilization, but in the odd exceptions where this is not true such as when one needs to go uphill to reach the trailhead, trail usage will be ...


29

Even though the question describes a hypothetical and unlikely situation I think it has some merits as it is somewhat relevant for SCUBA diving also: it describes an emergency uncontrolled SCUBA ascent (swimming or buoyant). Note that the answer below assumes an absolute emergency only that requires an immediate no-air ascent. As in, you either reach the ...


28

Dehydration occurs when there is more water going out or being used than is going in. Additionally, if you're drinking too fast (more than a litre an hour for an average adult male), you're not absorbing the water and so it doesn't count as going in. Confusingly, dehydration can also be classified loss of water, loss of electrolytes or loss of both. To add ...


28

I've been up close with grizzly and black bears before, I've had them come sniffing through my camp and I've done nothing but lay quiet in my sleeping bag and wait for them to wander off, which they usually do. Most of the time I don't even know they were there, I just find their tracks the next morning. Believe it or not bears spook really easily. I've ...


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