Generally interesting links – Nov 2021

Neurons in a Jellyfish brain

Science and the world

  • A magic treatment for paralysis?

    • A self-assembling gel injected at the site of spinal cord injuries in paralysed mice has enabled them to walk again after four weeks.
    • The gel mimics the matrix that is normally found around cells, providing a scaffold that helps cells to grow. It also provides signals that stimulate nerve regeneration.
  • New giant Russian spy submarines

  • “How Jellyfish work”

    • By examining the glowing chain reactions occurring in the animals’ neurons as they ate, the team determined that a subnetwork of neurons that produces a particular neuropeptide (a molecule produced by neurons) is responsible for the spatially localized inward folding of the body.
  • Adventures with understanding larval brains
  • Spiders flying on electric currents

    • First, they showed that spiders can detect electric fields. They put the arachnids on vertical strips of cardboard in the center of a plastic box, and then generated electric fields between the floor and ceiling of similar strengths to what the spiders would experience outdoors. These fields ruffled tiny sensory hairs on the spiders’ feet, known as trichobothria. “It’s like when you rub a balloon and hold it up to your hairs,” Morley says.
  • On the behavior of the so-called “demon star”

    • But scientists argue whether tiny variations in the light from Algol could be caused by even more stars orbiting in the system. To answer that, Jetsu applied a new mathematical method to years of recorded data of the light from Algol and revealed regular signals that suggest there may be up to five “companion” stars in the system.

Language, games, media


  • I discovered Ian Graham, who played a very important role in preserving Maya artifacts

    • For anyone who ever wanted to be an archaeologist, Ian Graham could be a hero. This lively memoir chronicles Graham’s career as the “last explorer” and a fierce advocate for the protection and preservation of Maya sites and monuments across Mexico, Guatemala, and Belize. It is also full of adventure and high society, for the self-deprecating Graham traveled to remote lands such as Afghanistan in wonderful company. He tells entertaining stories about his encounters with a host of notables beginning with Rudyard Kipling, a family friend from Graham’s childhood.
  • Neolithic folks made clothes from … trees !!

  • How “old” toasters from half a century ago are better than modern ones

  • Lidar continues to reveal interesting stuff in Central America: this time, Olmec sites

  • “The Indiana Jones of low Earth orbit” Space Archaeology 😀

People, culture, society

Computing and software


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