In this episode of SciTech Now, the largest desalination plant in North America is making Tampa Bay water safer and cleaner; space architecture and engineering expert Madhu Thengavelu discusses building settlements on the Moon and Mars; brain surgery performed while awake helps mitigate symptoms of Parkinson’s disease; and the Financial Times reports on the one-atom thick layer of carbon called graphene that is 200 times stronger than steel and thinner than a sheet of paper.