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SPF and UPF both have very similar purposes. But the are metrics for different things - the first is for rating sunscreen creams, they latter is for apparel. The measurement method is different i...
I am not familiar with your specific boat. In most cases the reason the needle is moving is because the float in the fuel tank is moving as the fuel sloshes back and forth in the tank. Changing...
I had a similar issue: I was tripping over a fire ring that was present at one campsite we used last year. I left one of our flashlights on, shining inside the fire ring until we packed up the nex...
Some articles about microfractures: We dropped 30 carabiners from heights of 21, 40, and 109 feet onto concrete, filmed the impact on high-speed video, and tested their ultimate strength. ... ...
It's a stupid system, even without looking at it. I don't see it as having any advantages. I don't take my phone with me in the back country. There's no reception. How do I find out the code I'...
I would not agree that 4 members is a bad number. Having 4 roped together during glacier travel with the risk of creavasses is still quite good and not much worse than 3 but if things become more t...
First of all, I don't think a one-size-fits-all number can be given. Some influencing factors I'd consider: Temperature? What works fine in April in Canada with the water still freezing every nig...
Update: I have found some photos of sheep tracks which clearly show that they do not travel directly up a hill. The first first one of switchbacks comes from this website by Chris Collison, where i...
Do animal trails use switchbacks? = No How do you prove a negative? You can't, but consider the alternate question; "Why would an animal trail use a switch back?" Goat climbing cliffs maybe, bu...
They don't really pitch it as a replacement for lat/long, but more postcodes and street addresses. A building number and postcode can (and has, IME) have an entrance on a different street, under a ...
I have a fair little collection of bones and skulls at home, which I have gathered since I was a kid on countless hikes and vacations in the great outdoors. What I normally do: If the skull does...
In his book "The Push" he describes this a bit. Most of the time they were using a running belay which means they were climbing at the same time with some pieces of protection in between them to av...
Outside of identifying the organization / group that maintains the access roads you're interested in and seeing if they have a web presence, I think a good starting place would be to check out some...
Hydrogen peroxide or a light bleach solution will work. Another good way is leaving it outside in direct sunlight for a month or two.
I'm a virologist (mostly flu), so I can answer for that and other viruses, but birds also host a range of bacterial and fungal and protozoan pathogens which can make you sick or even kill. These in...
You use What3words when you are looking for convenience rather than accuracy. Let's say if you are in an emergency situation and you need police assistance. It is much faster to let the police know...
Earliest in the year one could deep water solo in Majorca? Well it is safe to say that the month of March is somewhat too cold. People in Mallorca go swimming in October. But then the water temp...
None. Bears and wolves are no safety concern in Norway and Finland. Both are shy and, since they are not used to human contact (opposite to say, some places in the US where bears are used to peopl...
This is used a lot by emergency services, in fact I've recently seen emergency services advice recommending people install it on their phones. If you are outside, in the wind and the rain, and som...
Even though I am late on this, I'd like to try to give you some answers on your questions. I am volunteering in the german mountain rescue service, but I am in no way an expert in climbing security...
Mobile mapping is optimised for colour, which isn't available on any of the e-ink devices I can find, despite talk of colour e-paper since about 2013. Having played with black and white prints of ...
The correct answer for sure is "it depends on the exact model" but that is quite useless ;) As far as I can see all the airbag vests deploy over your whole shoulder area. This is definitely not su...
I've hesitated to post this answer because of some inconsistencies with my interpretation of your photo, mainly the absence of leaves. But the more times I have revisited this question, the more co...
For USA: https://www.usgs.gov/core-science-systems/ngp/tnm-delivery/topographic-maps Incredibly complete, and free. Maps are big PDFs (40mb or so). Not quicky navigated but well organized.
I'm surprised no one has mentioned a Farmer John. They're like overalls made out of wetsuit material. The reason I sometimes wear one is for safety in BC's frigid waters - if you fall in, you wan...
