Activity for guest‭

Type	On...	Excerpt	Status	Date
Answer	—	A: How real is the danger of suffocation in an Igloo? The danger is not only suffocation due to lack of oxygen, but also poisoning due to too much carbon dioxide in the air. Normal air has 21% oxygen; humans will safely survive down to 15%. Maybe 10% oxygen is barely survivable for a few hours. Mountaineers might have an advantage here, they regularly ... (more)	—	over 4 years ago
Answer	—	A: Can I fix my boots by gluing the soles back on? This is very common with expensive hiking boots, which use a soft, but less stable type of rubber. The process is called hydrolysis and is due to the ageing of this soft rubber. The rubber loses strength itself and becomes crumbly; it is not a glue issue. In my experience, glue does not work. I had... (more)	—	over 4 years ago