The Revenge of the Hot Water Bottle
solar.lowtechmagazine.com
Imagine a personal heating system that works indoors as well as outdoors, can be taken anywhere, requires little energy, and is independent of any infrastructure. It exists – and is hundreds of years old.
  • Dessalines@lemmy.ml
    1·
    4 years ago

    Cool article. I love my hot water bottle, don’t know what I’d do without it in winter.