The only area I have even limited ability is medicine.
Progress toward specific apoptosis-inducing agents for neoplasms
Progress in cancer vaccines
Safe and effective agents to reduce/prevent arterial plaque formation
Control of autoimmune diseases (Type I diabetes, arthritis...)
Demonstration of maximal lifespan for individual humans
Preventive medicine and fundamental societal changes to a healthy lifestyle (OK, this is a fantasy, but the wealth freed up by this could easily allow us to settle the Solar System)