Canadian Press-The trillion-dollar question these days is where the huge sums of money needed to address climate change are going to come from, especially for developing countries. Getting governments to put up more was the big focus at the UN climate conference that wrapped this week, but as seen by a wave of criticism about weak funding commitments, alternatives are needed too. “There’s just not enough money from government sources,” Catherine McKenna, chief executive of Climate and Nature Solutions and former federal environment minister, said in an interview. To help narrow the substantial gap, there’s an increasing push to use something called blended finance, which uses scarce public dollars to sweeten the financials of a project enough that it makes sense for the private sector to invest. “We need to…