I think bioengineering is one field where real advances are being made. If I could go back in time, I might tell myself to get into developing software and hardware for abiogenesis and genetic engineering research. I'd say to myself, "There's a lot more to learn than cloning a sheep." I expect to see some exciting discoveries in this area over the next decade, like artificial lifeforms, using base life-related chemicals to produce alternative fuels, etc.