Learning + Tutorials

Earthquakes are rough. They come from out of nowhere and can be extremely serious very quickly.

They often lead to other circumstances: fires quickly spring up from broken gas lines and downed power lines.

And they almost never happen one at a time, aftershocks a commonplace and can be even more damaging than the original quake.

Updated November 2025

There are certain items which are difficult if not impossible to recreate from raw materials in the wild.

They are:

Why all the fuss about water treatment outdoors? The answer is that there’s no easy way to tell whether or not that pristine-looking stream a few hundred yards away from your camp is harboring a gut-seeking microbe. If any animal, including humans, can reach an area, so can disease-causing microorganisms.