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Joined 3 years ago
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Cake day: March 16th, 2024

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  • Purple earth hypothesis suggests that early photosynthesis wasn’t chlorophil based, but on a simpler molecule (retinal) which is purple colored. The Canfield ocean was supposed to have followed this time yielding a turquoise life, where the ocean was anoxic and sulfidic. That was then replaced during the great oxigenation event which lead to the current green earth.








  • It depends on where you live, here in the Netherlands these days some plastic flexible tubing is used, but about 15-20 years ago this wasn’t allowed and it was copper tubing everywhere. A little longer ago it was also soldered tubing only, they changed that because a lot of gas lines run below floors in older houses and soldering with a burner is dangerous there. Anyway, if you have a house which was built before 2000, you probably have copper gas lines over here.


  • Not really, solid copper would need a higher temperature. It could be copper dust if there was some work done on the piping recently. It could also be that this is burning on bottled propane, which can contain some sulfur compounds that react with the copper, making the flames green. Or it could be cleaning agents if it’s recently cleaned. (according to some googling around) I also found this youtube video, but it’s kind of shitty, especially that it’s saying it’s due to acidic cleaner, and rinsing with vinegar should help.