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Startup behind world’s first hydrogen eVTOL eyes 2025 takeoff
  • Hydrogen energy density seems good on paper, but the storage and fuel cell systems add a lot of weight. That's why all the other electric flight companies are using batteries, they simply perform better.

  • Scientist Discover How to Convert CO2 into Powder That Can Be Stored for Decades
  • The big problem with physical carbon storage is that we emit way too much to ever have enough land to store it all as powder. All of these technologies work great at the demonstration scale, but when you do the math for any sort of scale that would make a dent in our emissions, it's just way too many carbon atoms.

  • Selfhost dog/cat tracker?
  • You can't self host a tracker like that, at least not for free, because the only way for the data to be reported is through a cellular connection which costs money. The subscription fee seems perfectly reasonable

  • InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)RB
    rbesfe @lemmy.ca
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