Nova is what people called those who were mutated (or evolved, some claim) by the energy that wiped out half of humanity. Only 1 in every 1,000 changed. Soon 3 Million people possessed super human powers or were transformed into something truly bizarre. It could happen to anyone, no rhyme or reason that science could determine.
Scientists theorize that the background energy, or Quantum was the cause of the mutations, that some humans developed to access it and then their minds took that energy and changed them. (Refer to Aberrant Corebook for more details)
Agencies and facilities began rising immediately and everyone was asking the question: “Is this was Dr. Cataclysm intended?” People were afraid of the Novas, suspicious that they were just the next step in Dr. Cataclysm’s plan. It reminded everyone of what they were avoiding thinking about, that nobody had heard from the man who almost destroyed the world, no since he said Boom.