Right now I'm building a knowledge base to hopefully create processes to enzymatically catalyze chemical reactions. Most importantly reactions that incorporate CO2 into sugars and nitrogens into amino acids (and atmospheric nitrogen into, well, not atmospheric nitrogen). If successful we wouldn't have to rely on increasingly unstable/extinct environmental systems for nutrition and materials because we could create nutrients and other plant-based stuff in some sort bio-reactor-like machine.
It's difficult because mostly I just want to walk into the sea as I often think it's mostly too late for any sort of intervention.