Climate Desk: One of the hard truths about climate change solutions--whether they`re solar panels, protective seawalls, or carbon-sucking golf balls--is that somebody has to pay for them. This week the UN`s climate chief, Christiana Figueres, told Climate Desk that global investment in clean energy technologies needs to reach $1 trillion per year by 2030 (a little less than the GDP of South Korea), roughly tripling where we`re at now, to keep global warming within the limit agreed on by international climate negotiators....