— FIELD NOTES —
Field Notes
Written knowledge from the same domains the device carries offline. Readable here, stored on it.
STAY ALIVE
How to Purify Water in the Backcountry
No single backcountry water method handles every threat. Boiling kills all three pathogen classes; filters, chemical drops and UV each mi...
STAY ALIVEHow Long Can You Survive Without Water?
Most healthy adults can go about three days without water, but heat and hard work can cut that under 24 hours. The variables that move th...