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Cake day: July 3rd, 2023

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  • Carbon neutrality means carbon dioxide neutrality. Carbon is just an element and literally everything you see and don’t see has some of it in it.

    Also, around 2% of our sun’s energy production involves the Bethe-Weizsäcker cycle which is a cyclical fusion reaction using carbon, nitrogen and oxygen. (The main source of energy production is through a proton-proton chain since our sun is too small to rely on the CNO-cycle entirely)



  • Karyoplasma@discuss.tchncs.detoScience Memes@mander.xyzJet Fuel
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    2 months ago

    The big problem China faced and why the one-child policy was abandoned after all is that there was a staunch focus on having a male child to “keep the bloodline alive” (cultural reasoning) which led to a stagnation in the 0-14 years age group due to an overpopulation with males. This is not fixed by killing off your elderly.

    Covid was most deadly for the age group of 65 and above and in 2019, they had proportionally less people aged 65+ than the US (13.50% in China vs. 16.4% in the US). Either China’s scientists failed immensely or the virus stemmed from bad hygiene practices in livestock markets selling bats.



  • Karyoplasma@discuss.tchncs.detoScience Memes@mander.xyzBBC Science
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    2 months ago

    Chromosomes are essentially packages of DNA and each end of a chromosome is extended by a protein called telomere, essentially sequences of “junk data” that protect the actual data (the DNA) from degradation or randomly fusing with other chromosomes. When cells split to renew, these telomeres are not fully copied to the new cell and thus shorten with each split. When they get too short, cells cannot split anymore, so there is a natural end to the renewal process (the so-called Hayflick limit).

    Lobsters possess an enzyme called telomerase which can repair telomeres and thus their cells can, in theory, divide indefinitely. They will still die naturally tho due to diseases or growing too large to sustain their body size and die of malnutrition, but they don’t age the way we do.



  • Karyoplasma@discuss.tchncs.detoScience Memes@mander.xyzBBC Science
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    2 months ago

    Depends how you look at it. If you keep raising off-shoots from cuttings, you are essentially producing extensions of the very same plant and you can do that indefinitely. Think about it like cloning: an individual plant will eventually die, but it’s clone will survive and can still propagate.

    Plants are not biologically immortal like some lobsters for example.









  • Karyoplasma@discuss.tchncs.detoGames@lemmy.worldYes
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    3 months ago

    Cazadores actually walk and it just looks like they are flying. They are blocked by objects, can’t cross gaps in the terrain or cross rivers (they can’t swim either).

    Vertibirds in FO4 are based on the Skyrim dragons and that’s why they tumble towards you when you shoot them. They can definitely adjust their height tho, they do that often to “avoid” the skyscrapers in downtown Boston even tho they can just fly through them. Not sure if it’s the upper part of the building that doesn’t have collision or if the vertibird is just exempt of colliding with buildings tho.