3 Matching Annotations
  1. Jan 2020
    1. University of Pennsylvania has designed a new, cost-effective approach to recycle Yttrium.

      can be recycled.

    1. this will eventually lead to increasing concentrations in humans, animals and soil particles.

      blood clots could be made in a human or animal.

    1. which is removing ore from rooms while leaving pillars in place to support the roof of the room.

      can it ever collapse because of this?