The UC Riverside Positron lab has one of the coolest research objectives ever:
They have a history of work in creating and observing larger and denser bunches of positronium. They are in the news recently for theoretical calculations showing that liquid helium bubbles could confine a positronium Bose-Einstein condensate, and keep it almost as stable as in vacuum (It's been known for decades that a single positronium atom shot into liquid helium can end up surrounded by a buddle and survive almost as long as in a vacuum despite all the other electrons in the helium).
They have a history of work in creating and observing larger and denser bunches of positronium. They are in the news recently for theoretical calculations showing that liquid helium bubbles could confine a positronium Bose-Einstein condensate, and keep it almost as stable as in vacuum (It's been known for decades that a single positronium atom shot into liquid helium can end up surrounded by a buddle and survive almost as long as in a vacuum despite all the other electrons in the helium).
