I think that both of these causes represent driving forces behind science inquiry because they represent considerable challenges causing much in the way of consternation. Global warming has incredible implications for the planet that cannot be ignored. With so much at stake in the global warming paradigm, science feels compelled to address these topics as quickly as possible. At the same time, cancer research also holds similarly challenging implications for so many. The idea behind needing to find cures to both or some type of redress for both is driven by how many lives are impacted by both.