

Sailors know your pain all too well. The key to preventing this is air movement. The less expensive option is some kind of material to put in between your cot and mattress, such as Hypervent Aire-Flow or Dri-Deck. An expensive solution is a Froli System, which has the added benefit of allowing you to tune the firmness for different parts of your body. I have a Froli under all of the bunks on my boat; condensation and mildew are no longer a thing now. But the price is steep.
Summary death to bicycle thieves, and anyone else actively wrecking the world. I am averse to the death penalty in most cases, but bicycle thieves are actively wrecking their communities. Someone rides a bike because they:
Stealing bicycles undermines these goals and poisons the community.
Of course, we could easily scale this up to, say, almost all CEOs of megacorporations.