The future of health, energy, quality of life, new food sources (lab grown, 3D printed, etc) and the potential to reduce impact on the environment.<p>What I'm not optimistic about it our ability to care for the planet. Our office is at a university, and there are restaurants on campus that serve food, on real plates, but only have take away coffee cups. I'm not blaming "kids these days", because it isn't an age thing. I see people everywhere not caring about the amount of single use plastics being used.<p>Aside from the environment, what else is there to NOT be optimistic about? Sure, we can say that income inequality is growing, which is true, but I've always wondered if we shouldn't be focused more on quality of life rather than the difference in size between 2 people's bank accounts.