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35

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 ...


32

If you look at the current time, and imagine yourself in the center a big analog watch, just place your shadow on the location of the hour's hand. Then imagine the location of the 12 o'clock hand, and exactly in the middle of the angle between those two hands is the north. Be sure to ignore daylight saving time (As the time your hand watch is showing during ...


32

Obviously, what you decide to pack depends on your trip and the environment, but these are the staples I always bring along: Navigation: You always need to be able to figure out where you are and which way you need to head to get out. In my opinion, a map without topography isn't a map (unless you're on very flat land). GPS with extra batteries Local ...


31

All the advice I've seen emphasises melting snow before consuming to avoid lowering your core body temperature (rather than, specifically, risking dehydration). If possible, melt the snow using a stove, or alternatively, pack the snow into a waterproof container and keep it in a pocket or your sleeping bag until it melts. News stories such as this one, ...


29

There are different types of being stranded; there's "lost the trail an hour in" stranded, "lost the trail twenty miles in" stranded, and "broke a leg" stranded, just to name a few. Considering your question Multi-day Hiking -- Therefore I assume you have standard hiking gear and are not asking for that. Also assuming that you're not going to be nearby ...


29

Assuming you don't have a genitourinary tract infection, fresh urine should be sterile, the problem is that it is a waste product which, apart from making it not taste very nice, means that consuming it will increase the concentration of waste in your body which will require an increased volume of water to absorb and subsequently excrete, resulting in you ...


29

The calories to melt even frozen water are pretty small, and the water gained is certainly greater than that used to aid the use of those calories. http://en.wikipedia.org/wiki/Calorie So 1 calorie = 1 degree celcius (roughly with minor variation). Okay easy. Except it takes 30 times that to melt it initially. Screw snow, let's figure on ice cubes. 1 ...


26

The EPA recommends boiling for one minute for most people, and three minutes for anyone above one mile in elevation. reference - http://water.epa.gov/drink/emerprep/emergencydisinfection.cfm#method That is what I have always done when backpacking. I don't boil for 10-20 minutes because it will kill my fuel supply and waste too much of the water. If I were ...


25

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 ...


23

There are many, many ways to make a fire. Some require more skill, while others depend on carefully prepared equipment. The closest thing to "rubbing two sticks together" is the hand-drill. You will need a fireboard (a small cedar board is good) and a thin, straight stick. A knife is good, too. This takes a lot of practice. Hand callouses help. YouTube has ...


23

Copy and paste from the answer here: http://skeptics.stackexchange.com/questions/1540/is-it-a-good-idea-to-drink-your-own-urine-in-a-survival-situation Summary: You can do it, as a last resort, but it's dicey. The US Army doesn't think it's a good idea and lists it on its "Do NOT drink" list, stating in its Field Manual that it "contains harmful body ...


23

This article (*) gives a good summary of the efficiency of boiling as a method for making water safe for consumption. In particular, Table 2 provides a summary of the temperature and time required to kill various micro-organisms. A distinction should be drawn between killing all pathogens and making water safe to drink. Sterilisation of water (killing all ...


22

If there's a stick around and enough sunlight, I've found the stick method surprisingly accurate: Find a straight stick, around 2 feet long (length isn't that important) and plant it straight in the ground. Mark the end of the stick's shadow, perhaps with another short stick. Wait for about 15 minutes then repeat step 2. Draw a line between the two ends ...


20

There seems to be a fixation with North in navigation. Step back to the basic purpose, why do we navigate? We navigate to get to somewhere or to find our way back. Knowing north is just one method of doing such. So predicating navigation on knowing which way is north is unnecessary. North isn't the goal, it's a reference for finding what you really ...


19

Urine is normally sterile (barring urinary tract infections) - so, from bacteriological stance, fresh urine isn't going to hurt. The problem is - urine is a waste product, and so is full of stuff that your body wants to be rid of. Worse, as you get more dehydrated, your body produces more concentrated urine. That said - as a short term measure to keep ...


19

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 ...


18

With fog, the only thing you're losing is extended visibility. This shouldn't throw off your plan too much, unless you were navigating by watching far away landmarks. If you were on a trail, stay on it. There's no need to wander around. If you can't see anything and traveling is becoming dangerous or you're not sure where you're going, then stop and wait ...


18

The best advice is not to unless you are very, very sure. Having said that, and just for fun, assuming you are in a chronic survival situation with no choice, this article describes how to test if a plant is edible.


18

The international distress signal is a triangle of fires.


18

Get them lost. Basically you want to get them out to where they lose their bearings, and then as a group, get them to find their way home. Good acting helps. If you can pretend you are also lost then they get the mental experience. This is a great way to teach people how to deal with really being lost. There are a couple of key points here, and the ...


18

You need to know if you are in Northern Hemisphere or in Southern Hemisphere or nearby the Equator. If you are in Northern Hemisphere: First locate the Polaris. Its the last star in The Ursa Minor. I've had trouble in locating it sometimes. Many people do. So, if you are in such a situation, try locating The Ursa Major. The Ursa Major is located just to ...


18

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 ...


17

If you can no longer see any trail signs, the best thing to do is go back the way you came until you find one and start searching in a circle from there. Never continue to go further assuming there is going to be a sign just up ahead. You may be right, however the risk of getting lost and something unfortunate happening is too great. If you become separated ...


17

First off, weigh up whether it's worth crossing said river. I know this question is about if you "have" to cross it, but bear in mind that falling in is a real danger and if you do, hypothermia can onset very quickly and be deadly. It depends on the situation - if we're talking about a shallow, wade-able body of water that's not much more than a stream I'd ...


17

Obviously, you're better off not going near the water in the first place. If there are storm clouds anywhere within your vicinity, do not spend unnecessary time in the water and consider the possibility of flash floods. If you do find yourself in the water, form a circle. You place your hands around the shoulders of the two people closest to you, and they ...


16

So if you're completely out of your expected element, have no emergency blanket or shelter, then there are a few options to provide some additional protection from the cold. Get out of the wind. The wind makes things that much more miserable. If you can, get into an area protected from the wind. Find some insulation. Stuff leaves loosely between clothing ...


16

The VERY FIRST thing you need to do is to not panic. Sit down for a minute or two and let your mind catch up to the fact you are lost. Now, take out your map, compass, gps, or whatever and try to find your way back to where you DID know where you were. If you can't figure out where the trail should be and you need to bushwhack, find a bit of a clearing, ...


16

For hunting bears you have to check with your local rangers for hunting season, permits and so on. Self-defense is self-defense if your mental state does not allow you to think and you feel killing is the only way out than it the only way out. BUT Bear Defense Spray is more effective and easier to obtain than .45 Also Noise will scare them off. So if ...


16

Hanging things on your pack Hanging things on that little loop at the top of your tent (like a nightlight) We use ours to lift and hang our packs As a simple pulley to change direction of a pull (less abrasive to your rope than a tree)


16

This does have a basis in a known technique, back burning, but by your description the application wasn't orthodox. From Wikipedia: Back burning is a way of reducing the amount of flammable material during a bushfire by starting small fires along a man made or natural firebreak in front of a main fire front. It is called back burning because the ...



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