Comments by "Jin Kee" (@JinKee) on "fern" channel.

  1. ConceptCraftedCreations on youtube shows you how to make a “thermoelectric water gun” that uses Peltier cpu coolers to freeze an “ice bullet” and then shoots it using compressed air hard enough to smash a wine glass
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  2. Shellfish conotoxin is a protein and can be mass manufactured using bacterial or yeast culture in a home-brewing setup
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  3. Scratches at 6, deeper grooves at 7.
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  4. Also have you seen Transcranial Magneto Stimulation? It uses magnets to interrupt your brain waves, and treat depression. But the device could be used to paralyse respiration and kill without leaving marks on the body and avoid any chemical traces
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